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Finding the Fourth Proportional to 34,535.88, 47,659.70 and 20,395.70

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Solution

The fourth proportional to 34,535.88, 47,659.70 and 20,395.70 is: 28,146.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,535.88 : 47,659.70 = 20,395.70 : x
  2. Step 2: Convert to fraction form
    34,535.88/47,659.70 = 20,395.70/x
  3. Step 3: Cross multiply
    34,535.88x = 47,659.70 × 20,395.70
  4. Step 4: Simplify right side
    34,535.88x = 972,052,943.29
  5. Step 5: Solve for x
    x = 972,052,943.29/34,535.88
  6. Step 6: Final answer
    x = 28,146.18

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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.