Home / 20,549.28-28,358.06-11,117.84

Finding the Fourth Proportional to 20,549.28, 28,358.06 and 11,117.84

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Solution

The fourth proportional to 20,549.28, 28,358.06 and 11,117.84 is: 15,342.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,549.28 : 28,358.06 = 11,117.84 : x
  2. Step 2: Convert to fraction form
    20,549.28/28,358.06 = 11,117.84/x
  3. Step 3: Cross multiply
    20,549.28x = 28,358.06 × 11,117.84
  4. Step 4: Simplify right side
    20,549.28x = 315,280,373.79
  5. Step 5: Solve for x
    x = 315,280,373.79/20,549.28
  6. Step 6: Final answer
    x = 15,342.65

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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.