Home / 8,172,021.60-12,258,032.40-6,912,309.60

Finding the Fourth Proportional to 8,172,021.60, 12,258,032.40 and 6,912,309.60

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Solution

The fourth proportional to 8,172,021.60, 12,258,032.40 and 6,912,309.60 is: 10,368,464.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,172,021.60 : 12,258,032.40 = 6,912,309.60 : x
  2. Step 2: Convert to fraction form
    8,172,021.60/12,258,032.40 = 6,912,309.60/x
  3. Step 3: Cross multiply
    8,172,021.60x = 12,258,032.40 × 6,912,309.60
  4. Step 4: Simplify right side
    8,172,021.60x = 84,731,315,035,631.03
  5. Step 5: Solve for x
    x = 84,731,315,035,631.03/8,172,021.60
  6. Step 6: Final answer
    x = 10,368,464.40

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.