Home / 10,345.60-15,518.40-7,429.60

Finding the Fourth Proportional to 10,345.60, 15,518.40 and 7,429.60

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Solution

The fourth proportional to 10,345.60, 15,518.40 and 7,429.60 is: 11,144.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,345.60 : 15,518.40 = 7,429.60 : x
  2. Step 2: Convert to fraction form
    10,345.60/15,518.40 = 7,429.60/x
  3. Step 3: Cross multiply
    10,345.60x = 15,518.40 × 7,429.60
  4. Step 4: Simplify right side
    10,345.60x = 115,295,504.64
  5. Step 5: Solve for x
    x = 115,295,504.64/10,345.60
  6. Step 6: Final answer
    x = 11,144.40

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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.