Home / 21,129,000.10-31,693,500.15-20,845,564.90

Finding the Fourth Proportional to 21,129,000.10, 31,693,500.15 and 20,845,564.90

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Solution

The fourth proportional to 21,129,000.10, 31,693,500.15 and 20,845,564.90 is: 31,268,347.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,129,000.10 : 31,693,500.15 = 20,845,564.90 : x
  2. Step 2: Convert to fraction form
    21,129,000.10/31,693,500.15 = 20,845,564.90/x
  3. Step 3: Cross multiply
    21,129,000.10x = 31,693,500.15 × 20,845,564.90
  4. Step 4: Simplify right side
    21,129,000.10x = 660,668,914,284,984.62
  5. Step 5: Solve for x
    x = 660,668,914,284,984.62/21,129,000.10
  6. Step 6: Final answer
    x = 31,268,347.35

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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.