Home / 15,340.53-21,168.72-8,624.88

Finding the Fourth Proportional to 15,340.53, 21,168.72 and 8,624.88

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Solution

The fourth proportional to 15,340.53, 21,168.72 and 8,624.88 is: 11,901.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,340.53 : 21,168.72 = 8,624.88 : x
  2. Step 2: Convert to fraction form
    15,340.53/21,168.72 = 8,624.88/x
  3. Step 3: Cross multiply
    15,340.53x = 21,168.72 × 8,624.88
  4. Step 4: Simplify right side
    15,340.53x = 182,577,669.75
  5. Step 5: Solve for x
    x = 182,577,669.75/15,340.53
  6. Step 6: Final answer
    x = 11,901.65

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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.