Home / 15,573.46-21,490.56-8,499.76

Finding the Fourth Proportional to 15,573.46, 21,490.56 and 8,499.76

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Solution

The fourth proportional to 15,573.46, 21,490.56 and 8,499.76 is: 11,729.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,573.46 : 21,490.56 = 8,499.76 : x
  2. Step 2: Convert to fraction form
    15,573.46/21,490.56 = 8,499.76/x
  3. Step 3: Cross multiply
    15,573.46x = 21,490.56 × 8,499.76
  4. Step 4: Simplify right side
    15,573.46x = 182,664,602.27
  5. Step 5: Solve for x
    x = 182,664,602.27/15,573.46
  6. Step 6: Final answer
    x = 11,729.22

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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.