Home / 21,275.28-29,350.80-14,902.56

Finding the Fourth Proportional to 21,275.28, 29,350.80 and 14,902.56

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Solution

The fourth proportional to 21,275.28, 29,350.80 and 14,902.56 is: 20,559.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275.28 : 29,350.80 = 14,902.56 : x
  2. Step 2: Convert to fraction form
    21,275.28/29,350.80 = 14,902.56/x
  3. Step 3: Cross multiply
    21,275.28x = 29,350.80 × 14,902.56
  4. Step 4: Simplify right side
    21,275.28x = 437,402,058.05
  5. Step 5: Solve for x
    x = 437,402,058.05/21,275.28
  6. Step 6: Final answer
    x = 20,559.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.