Home / 21,087,033.10-31,567,564.05-12,562,981.90

Finding the Fourth Proportional to 21,087,033.10, 31,567,564.05 and 12,562,981.90

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Solution

The fourth proportional to 21,087,033.10, 31,567,564.05 and 12,562,981.90 is: 18,806,948.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,087,033.10 : 31,567,564.05 = 12,562,981.90 : x
  2. Step 2: Convert to fraction form
    21,087,033.10/31,567,564.05 = 12,562,981.90/x
  3. Step 3: Cross multiply
    21,087,033.10x = 31,567,564.05 × 12,562,981.90
  4. Step 4: Simplify right side
    21,087,033.10x = 396,582,735,787,240.69
  5. Step 5: Solve for x
    x = 396,582,735,787,240.69/21,087,033.10
  6. Step 6: Final answer
    x = 18,806,948.04

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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.