Home / 34,242.20-47,268.78-20,817.74

Finding the Fourth Proportional to 34,242.20, 47,268.78 and 20,817.74

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Solution

The fourth proportional to 34,242.20, 47,268.78 and 20,817.74 is: 28,737.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,242.20 : 47,268.78 = 20,817.74 : x
  2. Step 2: Convert to fraction form
    34,242.20/47,268.78 = 20,817.74/x
  3. Step 3: Cross multiply
    34,242.20x = 47,268.78 × 20,817.74
  4. Step 4: Simplify right side
    34,242.20x = 984,028,935.81
  5. Step 5: Solve for x
    x = 984,028,935.81/34,242.20
  6. Step 6: Final answer
    x = 28,737.32

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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.