Home / 15,329.79-21,153.89-8,614.16

Finding the Fourth Proportional to 15,329.79, 21,153.89 and 8,614.16

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Solution

The fourth proportional to 15,329.79, 21,153.89 and 8,614.16 is: 11,886.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,329.79 : 21,153.89 = 8,614.16 : x
  2. Step 2: Convert to fraction form
    15,329.79/21,153.89 = 8,614.16/x
  3. Step 3: Cross multiply
    15,329.79x = 21,153.89 × 8,614.16
  4. Step 4: Simplify right side
    15,329.79x = 182,222,876.55
  5. Step 5: Solve for x
    x = 182,222,876.55/15,329.79
  6. Step 6: Final answer
    x = 11,886.85

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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.