Home / 31,490.57-47,235.78-21,599.87

Finding the Fourth Proportional to 31,490.57, 47,235.78 and 21,599.87

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Solution

The fourth proportional to 31,490.57, 47,235.78 and 21,599.87 is: 32,399.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,490.57 : 47,235.78 = 21,599.87 : x
  2. Step 2: Convert to fraction form
    31,490.57/47,235.78 = 21,599.87/x
  3. Step 3: Cross multiply
    31,490.57x = 47,235.78 × 21,599.87
  4. Step 4: Simplify right side
    31,490.57x = 1,020,286,471.17
  5. Step 5: Solve for x
    x = 1,020,286,471.17/31,490.57
  6. Step 6: Final answer
    x = 32,399.75

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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.