Home / 34,356.42-47,402.19-20,928.06

Finding the Fourth Proportional to 34,356.42, 47,402.19 and 20,928.06

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Solution

The fourth proportional to 34,356.42, 47,402.19 and 20,928.06 is: 28,874.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,356.42 : 47,402.19 = 20,928.06 : x
  2. Step 2: Convert to fraction form
    34,356.42/47,402.19 = 20,928.06/x
  3. Step 3: Cross multiply
    34,356.42x = 47,402.19 × 20,928.06
  4. Step 4: Simplify right side
    34,356.42x = 992,035,876.45
  5. Step 5: Solve for x
    x = 992,035,876.45/34,356.42
  6. Step 6: Final answer
    x = 28,874.83

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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.