Home / 12,331.24-17,131.16-12,215.95

Finding the Fourth Proportional to 12,331.24, 17,131.16 and 12,215.95

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Solution

The fourth proportional to 12,331.24, 17,131.16 and 12,215.95 is: 16,971.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,331.24 : 17,131.16 = 12,215.95 : x
  2. Step 2: Convert to fraction form
    12,331.24/17,131.16 = 12,215.95/x
  3. Step 3: Cross multiply
    12,331.24x = 17,131.16 × 12,215.95
  4. Step 4: Simplify right side
    12,331.24x = 209,273,381.71
  5. Step 5: Solve for x
    x = 209,273,381.71/12,331.24
  6. Step 6: Final answer
    x = 16,971.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.