Home / 15,329.12-21,154.71-8,614.59

Finding the Fourth Proportional to 15,329.12, 21,154.71 and 8,614.59

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Solution

The fourth proportional to 15,329.12, 21,154.71 and 8,614.59 is: 11,888.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,329.12 : 21,154.71 = 8,614.59 : x
  2. Step 2: Convert to fraction form
    15,329.12/21,154.71 = 8,614.59/x
  3. Step 3: Cross multiply
    15,329.12x = 21,154.71 × 8,614.59
  4. Step 4: Simplify right side
    15,329.12x = 182,239,153.22
  5. Step 5: Solve for x
    x = 182,239,153.22/15,329.12
  6. Step 6: Final answer
    x = 11,888.43

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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.