Home / 31,500.87-47,142.32-25,812.79

Finding the Fourth Proportional to 31,500.87, 47,142.32 and 25,812.79

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Solution

The fourth proportional to 31,500.87, 47,142.32 and 25,812.79 is: 38,629.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,500.87 : 47,142.32 = 25,812.79 : x
  2. Step 2: Convert to fraction form
    31,500.87/47,142.32 = 25,812.79/x
  3. Step 3: Cross multiply
    31,500.87x = 47,142.32 × 25,812.79
  4. Step 4: Simplify right side
    31,500.87x = 1,216,875,049.03
  5. Step 5: Solve for x
    x = 1,216,875,049.03/31,500.87
  6. Step 6: Final answer
    x = 38,629.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.