Home / 20,616.04-28,439.70-13,049.68

Finding the Fourth Proportional to 20,616.04, 28,439.70 and 13,049.68

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Solution

The fourth proportional to 20,616.04, 28,439.70 and 13,049.68 is: 18,001.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,616.04 : 28,439.70 = 13,049.68 : x
  2. Step 2: Convert to fraction form
    20,616.04/28,439.70 = 13,049.68/x
  3. Step 3: Cross multiply
    20,616.04x = 28,439.70 × 13,049.68
  4. Step 4: Simplify right side
    20,616.04x = 371,128,984.30
  5. Step 5: Solve for x
    x = 371,128,984.30/20,616.04
  6. Step 6: Final answer
    x = 18,001.95

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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.