Home / 21,472.02-32,194.80-7,428.78

Finding the Fourth Proportional to 21,472.02, 32,194.80 and 7,428.78

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Solution

The fourth proportional to 21,472.02, 32,194.80 and 7,428.78 is: 11,138.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,472.02 : 32,194.80 = 7,428.78 : x
  2. Step 2: Convert to fraction form
    21,472.02/32,194.80 = 7,428.78/x
  3. Step 3: Cross multiply
    21,472.02x = 32,194.80 × 7,428.78
  4. Step 4: Simplify right side
    21,472.02x = 239,168,086.34
  5. Step 5: Solve for x
    x = 239,168,086.34/21,472.02
  6. Step 6: Final answer
    x = 11,138.59

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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.