Home / 21,151.20-31,726.88-5,356.23

Finding the Fourth Proportional to 21,151.20, 31,726.88 and 5,356.23

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Solution

The fourth proportional to 21,151.20, 31,726.88 and 5,356.23 is: 8,034.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,151.20 : 31,726.88 = 5,356.23 : x
  2. Step 2: Convert to fraction form
    21,151.20/31,726.88 = 5,356.23/x
  3. Step 3: Cross multiply
    21,151.20x = 31,726.88 × 5,356.23
  4. Step 4: Simplify right side
    21,151.20x = 169,936,430.02
  5. Step 5: Solve for x
    x = 169,936,430.02/21,151.20
  6. Step 6: Final answer
    x = 8,034.36

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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.