Home / 34,432.56-47,509.20-20,286.72

Finding the Fourth Proportional to 34,432.56, 47,509.20 and 20,286.72

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Solution

The fourth proportional to 34,432.56, 47,509.20 and 20,286.72 is: 27,991.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,432.56 : 47,509.20 = 20,286.72 : x
  2. Step 2: Convert to fraction form
    34,432.56/47,509.20 = 20,286.72/x
  3. Step 3: Cross multiply
    34,432.56x = 47,509.20 × 20,286.72
  4. Step 4: Simplify right side
    34,432.56x = 963,805,837.82
  5. Step 5: Solve for x
    x = 963,805,837.82/34,432.56
  6. Step 6: Final answer
    x = 27,991.12

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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.