Home / 15,573.12-21,490.62-8,499.36

Finding the Fourth Proportional to 15,573.12, 21,490.62 and 8,499.36

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Solution

The fourth proportional to 15,573.12, 21,490.62 and 8,499.36 is: 11,728.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,573.12 : 21,490.62 = 8,499.36 : x
  2. Step 2: Convert to fraction form
    15,573.12/21,490.62 = 8,499.36/x
  3. Step 3: Cross multiply
    15,573.12x = 21,490.62 × 8,499.36
  4. Step 4: Simplify right side
    15,573.12x = 182,656,516.00
  5. Step 5: Solve for x
    x = 182,656,516.00/15,573.12
  6. Step 6: Final answer
    x = 11,728.96

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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.