Home / 12,088.11-16,686.81-11,331.57

Finding the Fourth Proportional to 12,088.11, 16,686.81 and 11,331.57

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Solution

The fourth proportional to 12,088.11, 16,686.81 and 11,331.57 is: 15,642.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,088.11 : 16,686.81 = 11,331.57 : x
  2. Step 2: Convert to fraction form
    12,088.11/16,686.81 = 11,331.57/x
  3. Step 3: Cross multiply
    12,088.11x = 16,686.81 × 11,331.57
  4. Step 4: Simplify right side
    12,088.11x = 189,087,755.59
  5. Step 5: Solve for x
    x = 189,087,755.59/12,088.11
  6. Step 6: Final answer
    x = 15,642.46

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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.