Home / 18,687,640.20-28,025,930.70-7,321,547.40

Finding the Fourth Proportional to 18,687,640.20, 28,025,930.70 and 7,321,547.40

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Solution

The fourth proportional to 18,687,640.20, 28,025,930.70 and 7,321,547.40 is: 10,980,154.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,687,640.20 : 28,025,930.70 = 7,321,547.40 : x
  2. Step 2: Convert to fraction form
    18,687,640.20/28,025,930.70 = 7,321,547.40/x
  3. Step 3: Cross multiply
    18,687,640.20x = 28,025,930.70 × 7,321,547.40
  4. Step 4: Simplify right side
    18,687,640.20x = 205,193,180,049,165.19
  5. Step 5: Solve for x
    x = 205,193,180,049,165.19/18,687,640.20
  6. Step 6: Final answer
    x = 10,980,154.68

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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.