Home / 31,257.02-43,134.95-18,510.91

Finding the Fourth Proportional to 31,257.02, 43,134.95 and 18,510.91

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Solution

The fourth proportional to 31,257.02, 43,134.95 and 18,510.91 is: 25,545.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,257.02 : 43,134.95 = 18,510.91 : x
  2. Step 2: Convert to fraction form
    31,257.02/43,134.95 = 18,510.91/x
  3. Step 3: Cross multiply
    31,257.02x = 43,134.95 × 18,510.91
  4. Step 4: Simplify right side
    31,257.02x = 798,467,115.74
  5. Step 5: Solve for x
    x = 798,467,115.74/31,257.02
  6. Step 6: Final answer
    x = 25,545.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.