Home / 20,688,312.30-31,032,468.45-18,456,260.10

Finding the Fourth Proportional to 20,688,312.30, 31,032,468.45 and 18,456,260.10

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Solution

The fourth proportional to 20,688,312.30, 31,032,468.45 and 18,456,260.10 is: 27,684,390.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688,312.30 : 31,032,468.45 = 18,456,260.10 : x
  2. Step 2: Convert to fraction form
    20,688,312.30/31,032,468.45 = 18,456,260.10/x
  3. Step 3: Cross multiply
    20,688,312.30x = 31,032,468.45 × 18,456,260.10
  4. Step 4: Simplify right side
    20,688,312.30x = 572,743,309,258,243.88
  5. Step 5: Solve for x
    x = 572,743,309,258,243.88/20,688,312.30
  6. Step 6: Final answer
    x = 27,684,390.15

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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.