Home / 23,125.50-31,913.19-12,515.21

Finding the Fourth Proportional to 23,125.50, 31,913.19 and 12,515.21

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Solution

The fourth proportional to 23,125.50, 31,913.19 and 12,515.21 is: 17,270.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,125.50 : 31,913.19 = 12,515.21 : x
  2. Step 2: Convert to fraction form
    23,125.50/31,913.19 = 12,515.21/x
  3. Step 3: Cross multiply
    23,125.50x = 31,913.19 × 12,515.21
  4. Step 4: Simplify right side
    23,125.50x = 399,400,234.73
  5. Step 5: Solve for x
    x = 399,400,234.73/23,125.50
  6. Step 6: Final answer
    x = 17,270.99

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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.