Home / 15,332.31-21,157.83-8,618.22

Finding the Fourth Proportional to 15,332.31, 21,157.83 and 8,618.22

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Solution

The fourth proportional to 15,332.31, 21,157.83 and 8,618.22 is: 11,892.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,332.31 : 21,157.83 = 8,618.22 : x
  2. Step 2: Convert to fraction form
    15,332.31/21,157.83 = 8,618.22/x
  3. Step 3: Cross multiply
    15,332.31x = 21,157.83 × 8,618.22
  4. Step 4: Simplify right side
    15,332.31x = 182,342,833.66
  5. Step 5: Solve for x
    x = 182,342,833.66/15,332.31
  6. Step 6: Final answer
    x = 11,892.72

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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.