Home / 20,332.92-28,081.40-13,976.32

Finding the Fourth Proportional to 20,332.92, 28,081.40 and 13,976.32

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Solution

The fourth proportional to 20,332.92, 28,081.40 and 13,976.32 is: 19,302.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,332.92 : 28,081.40 = 13,976.32 : x
  2. Step 2: Convert to fraction form
    20,332.92/28,081.40 = 13,976.32/x
  3. Step 3: Cross multiply
    20,332.92x = 28,081.40 × 13,976.32
  4. Step 4: Simplify right side
    20,332.92x = 392,474,632.45
  5. Step 5: Solve for x
    x = 392,474,632.45/20,332.92
  6. Step 6: Final answer
    x = 19,302.42

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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.