Home / 15,330.59-21,156.80-8,616.09

Finding the Fourth Proportional to 15,330.59, 21,156.80 and 8,616.09

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Solution

The fourth proportional to 15,330.59, 21,156.80 and 8,616.09 is: 11,890.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,330.59 : 21,156.80 = 8,616.09 : x
  2. Step 2: Convert to fraction form
    15,330.59/21,156.80 = 8,616.09/x
  3. Step 3: Cross multiply
    15,330.59x = 21,156.80 × 8,616.09
  4. Step 4: Simplify right side
    15,330.59x = 182,288,849.83
  5. Step 5: Solve for x
    x = 182,288,849.83/15,330.59
  6. Step 6: Final answer
    x = 11,890.53

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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.