Home / 14,652.38-20,220.30-8,687

Finding the Fourth Proportional to 14,652.38, 20,220.30 and 8,687

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Solution

The fourth proportional to 14,652.38, 20,220.30 and 8,687 is: 11,988.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,652.38 : 20,220.30 = 8,687 : x
  2. Step 2: Convert to fraction form
    14,652.38/20,220.30 = 8,687/x
  3. Step 3: Cross multiply
    14,652.38x = 20,220.30 × 8,687
  4. Step 4: Simplify right side
    14,652.38x = 175,653,746.10
  5. Step 5: Solve for x
    x = 175,653,746.10/14,652.38
  6. Step 6: Final answer
    x = 11,988.07

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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.