Home / 20,506.72-28,293.42-11,551.10

Finding the Fourth Proportional to 20,506.72, 28,293.42 and 11,551.10

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Solution

The fourth proportional to 20,506.72, 28,293.42 and 11,551.10 is: 15,937.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,506.72 : 28,293.42 = 11,551.10 : x
  2. Step 2: Convert to fraction form
    20,506.72/28,293.42 = 11,551.10/x
  3. Step 3: Cross multiply
    20,506.72x = 28,293.42 × 11,551.10
  4. Step 4: Simplify right side
    20,506.72x = 326,820,123.76
  5. Step 5: Solve for x
    x = 326,820,123.76/20,506.72
  6. Step 6: Final answer
    x = 15,937.22

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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.