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Finding the Fourth Proportional to 34,385.48, 47,449.48 and 20,236.40

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Solution

The fourth proportional to 34,385.48, 47,449.48 and 20,236.40 is: 27,924.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,385.48 : 47,449.48 = 20,236.40 : x
  2. Step 2: Convert to fraction form
    34,385.48/47,449.48 = 20,236.40/x
  3. Step 3: Cross multiply
    34,385.48x = 47,449.48 × 20,236.40
  4. Step 4: Simplify right side
    34,385.48x = 960,206,657.07
  5. Step 5: Solve for x
    x = 960,206,657.07/34,385.48
  6. Step 6: Final answer
    x = 27,924.77

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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.