Home / 31,360.59-47,035.22-12,639.87

Finding the Fourth Proportional to 31,360.59, 47,035.22 and 12,639.87

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Solution

The fourth proportional to 31,360.59, 47,035.22 and 12,639.87 is: 18,957.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,360.59 : 47,035.22 = 12,639.87 : x
  2. Step 2: Convert to fraction form
    31,360.59/47,035.22 = 12,639.87/x
  3. Step 3: Cross multiply
    31,360.59x = 47,035.22 × 12,639.87
  4. Step 4: Simplify right side
    31,360.59x = 594,519,003.02
  5. Step 5: Solve for x
    x = 594,519,003.02/31,360.59
  6. Step 6: Final answer
    x = 18,957.52

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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.