Home / 23,131.01-31,920.95-12,520.66

Finding the Fourth Proportional to 23,131.01, 31,920.95 and 12,520.66

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Solution

The fourth proportional to 23,131.01, 31,920.95 and 12,520.66 is: 17,278.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,131.01 : 31,920.95 = 12,520.66 : x
  2. Step 2: Convert to fraction form
    23,131.01/31,920.95 = 12,520.66/x
  3. Step 3: Cross multiply
    23,131.01x = 31,920.95 × 12,520.66
  4. Step 4: Simplify right side
    23,131.01x = 399,671,361.83
  5. Step 5: Solve for x
    x = 399,671,361.83/23,131.01
  6. Step 6: Final answer
    x = 17,278.60

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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.