Home / 15,496.68-21,385.42-8,423.08

Finding the Fourth Proportional to 15,496.68, 21,385.42 and 8,423.08

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Solution

The fourth proportional to 15,496.68, 21,385.42 and 8,423.08 is: 11,623.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,496.68 : 21,385.42 = 8,423.08 : x
  2. Step 2: Convert to fraction form
    15,496.68/21,385.42 = 8,423.08/x
  3. Step 3: Cross multiply
    15,496.68x = 21,385.42 × 8,423.08
  4. Step 4: Simplify right side
    15,496.68x = 180,131,103.49
  5. Step 5: Solve for x
    x = 180,131,103.49/15,496.68
  6. Step 6: Final answer
    x = 11,623.85

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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.