Home / 15,573.18-21,490.98-8,499.66

Finding the Fourth Proportional to 15,573.18, 21,490.98 and 8,499.66

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Solution

The fourth proportional to 15,573.18, 21,490.98 and 8,499.66 is: 11,729.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,573.18 : 21,490.98 = 8,499.66 : x
  2. Step 2: Convert to fraction form
    15,573.18/21,490.98 = 8,499.66/x
  3. Step 3: Cross multiply
    15,573.18x = 21,490.98 × 8,499.66
  4. Step 4: Simplify right side
    15,573.18x = 182,666,023.07
  5. Step 5: Solve for x
    x = 182,666,023.07/15,573.18
  6. Step 6: Final answer
    x = 11,729.53

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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.