Home / 31,640.69-47,474.13-13,862.16

Finding the Fourth Proportional to 31,640.69, 47,474.13 and 13,862.16

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Solution

The fourth proportional to 31,640.69, 47,474.13 and 13,862.16 is: 20,798.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,640.69 : 47,474.13 = 13,862.16 : x
  2. Step 2: Convert to fraction form
    31,640.69/47,474.13 = 13,862.16/x
  3. Step 3: Cross multiply
    31,640.69x = 47,474.13 × 13,862.16
  4. Step 4: Simplify right side
    31,640.69x = 658,093,985.92
  5. Step 5: Solve for x
    x = 658,093,985.92/31,640.69
  6. Step 6: Final answer
    x = 20,798.98

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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.