Home / 21,172,817.10-31,759,225.65-20,747,664.30

Finding the Fourth Proportional to 21,172,817.10, 31,759,225.65 and 20,747,664.30

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Solution

The fourth proportional to 21,172,817.10, 31,759,225.65 and 20,747,664.30 is: 31,121,496.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,172,817.10 : 31,759,225.65 = 20,747,664.30 : x
  2. Step 2: Convert to fraction form
    21,172,817.10/31,759,225.65 = 20,747,664.30/x
  3. Step 3: Cross multiply
    21,172,817.10x = 31,759,225.65 × 20,747,664.30
  4. Step 4: Simplify right side
    21,172,817.10x = 658,929,752,214,149.25
  5. Step 5: Solve for x
    x = 658,929,752,214,149.25/21,172,817.10
  6. Step 6: Final answer
    x = 31,121,496.45

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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.