Home / 20,710.19-31,066.30-5,921.28

Finding the Fourth Proportional to 20,710.19, 31,066.30 and 5,921.28

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Solution

The fourth proportional to 20,710.19, 31,066.30 and 5,921.28 is: 8,882.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,710.19 : 31,066.30 = 5,921.28 : x
  2. Step 2: Convert to fraction form
    20,710.19/31,066.30 = 5,921.28/x
  3. Step 3: Cross multiply
    20,710.19x = 31,066.30 × 5,921.28
  4. Step 4: Simplify right side
    20,710.19x = 183,952,260.86
  5. Step 5: Solve for x
    x = 183,952,260.86/20,710.19
  6. Step 6: Final answer
    x = 8,882.21

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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.