Home / 20,362.92-28,114.56-12,717.87

Finding the Fourth Proportional to 20,362.92, 28,114.56 and 12,717.87

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Solution

The fourth proportional to 20,362.92, 28,114.56 and 12,717.87 is: 17,559.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,362.92 : 28,114.56 = 12,717.87 : x
  2. Step 2: Convert to fraction form
    20,362.92/28,114.56 = 12,717.87/x
  3. Step 3: Cross multiply
    20,362.92x = 28,114.56 × 12,717.87
  4. Step 4: Simplify right side
    20,362.92x = 357,557,319.19
  5. Step 5: Solve for x
    x = 357,557,319.19/20,362.92
  6. Step 6: Final answer
    x = 17,559.24

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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.