Home / 12,383,148.60-18,574,722.90-6,643,585.80

Finding the Fourth Proportional to 12,383,148.60, 18,574,722.90 and 6,643,585.80

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Solution

The fourth proportional to 12,383,148.60, 18,574,722.90 and 6,643,585.80 is: 9,965,378.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,383,148.60 : 18,574,722.90 = 6,643,585.80 : x
  2. Step 2: Convert to fraction form
    12,383,148.60/18,574,722.90 = 6,643,585.80/x
  3. Step 3: Cross multiply
    12,383,148.60x = 18,574,722.90 × 6,643,585.80
  4. Step 4: Simplify right side
    12,383,148.60x = 123,402,765,297,374.81
  5. Step 5: Solve for x
    x = 123,402,765,297,374.81/12,383,148.60
  6. Step 6: Final answer
    x = 9,965,378.70

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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.