Home / 20,889.28-28,824.52-11,937.36

Finding the Fourth Proportional to 20,889.28, 28,824.52 and 11,937.36

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Solution

The fourth proportional to 20,889.28, 28,824.52 and 11,937.36 is: 16,472.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,889.28 : 28,824.52 = 11,937.36 : x
  2. Step 2: Convert to fraction form
    20,889.28/28,824.52 = 11,937.36/x
  3. Step 3: Cross multiply
    20,889.28x = 28,824.52 × 11,937.36
  4. Step 4: Simplify right side
    20,889.28x = 344,088,672.07
  5. Step 5: Solve for x
    x = 344,088,672.07/20,889.28
  6. Step 6: Final answer
    x = 16,472.02

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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.