Home / 20,665.42-31,001.05-6,622.17

Finding the Fourth Proportional to 20,665.42, 31,001.05 and 6,622.17

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Solution

The fourth proportional to 20,665.42, 31,001.05 and 6,622.17 is: 9,934.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,665.42 : 31,001.05 = 6,622.17 : x
  2. Step 2: Convert to fraction form
    20,665.42/31,001.05 = 6,622.17/x
  3. Step 3: Cross multiply
    20,665.42x = 31,001.05 × 6,622.17
  4. Step 4: Simplify right side
    20,665.42x = 205,294,223.28
  5. Step 5: Solve for x
    x = 205,294,223.28/20,665.42
  6. Step 6: Final answer
    x = 9,934.19

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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.