Home / 23,131.26-31,921.14-12,520.98

Finding the Fourth Proportional to 23,131.26, 31,921.14 and 12,520.98

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Solution

The fourth proportional to 23,131.26, 31,921.14 and 12,520.98 is: 17,278.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,131.26 : 31,921.14 = 12,520.98 : x
  2. Step 2: Convert to fraction form
    23,131.26/31,921.14 = 12,520.98/x
  3. Step 3: Cross multiply
    23,131.26x = 31,921.14 × 12,520.98
  4. Step 4: Simplify right side
    23,131.26x = 399,683,955.52
  5. Step 5: Solve for x
    x = 399,683,955.52/23,131.26
  6. Step 6: Final answer
    x = 17,278.95

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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.