Home / 20,346.38-28,076.59-13,630.92

Finding the Fourth Proportional to 20,346.38, 28,076.59 and 13,630.92

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Solution

The fourth proportional to 20,346.38, 28,076.59 and 13,630.92 is: 18,809.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,346.38 : 28,076.59 = 13,630.92 : x
  2. Step 2: Convert to fraction form
    20,346.38/28,076.59 = 13,630.92/x
  3. Step 3: Cross multiply
    20,346.38x = 28,076.59 × 13,630.92
  4. Step 4: Simplify right side
    20,346.38x = 382,709,752.16
  5. Step 5: Solve for x
    x = 382,709,752.16/20,346.38
  6. Step 6: Final answer
    x = 18,809.72

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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.