Home / 31,513.16-47,270.61-11,787.95

Finding the Fourth Proportional to 31,513.16, 47,270.61 and 11,787.95

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Solution

The fourth proportional to 31,513.16, 47,270.61 and 11,787.95 is: 17,682.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,513.16 : 47,270.61 = 11,787.95 : x
  2. Step 2: Convert to fraction form
    31,513.16/47,270.61 = 11,787.95/x
  3. Step 3: Cross multiply
    31,513.16x = 47,270.61 × 11,787.95
  4. Step 4: Simplify right side
    31,513.16x = 557,223,350.80
  5. Step 5: Solve for x
    x = 557,223,350.80/31,513.16
  6. Step 6: Final answer
    x = 17,682.25

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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.