Home / 20,997.90-31,501.29-6,957.13

Finding the Fourth Proportional to 20,997.90, 31,501.29 and 6,957.13

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Solution

The fourth proportional to 20,997.90, 31,501.29 and 6,957.13 is: 10,437.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,997.90 : 31,501.29 = 6,957.13 : x
  2. Step 2: Convert to fraction form
    20,997.90/31,501.29 = 6,957.13/x
  3. Step 3: Cross multiply
    20,997.90x = 31,501.29 × 6,957.13
  4. Step 4: Simplify right side
    20,997.90x = 219,158,569.70
  5. Step 5: Solve for x
    x = 219,158,569.70/20,997.90
  6. Step 6: Final answer
    x = 10,437.17

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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.