Home / 29,079.45-40,129.70-16,988.22

Finding the Fourth Proportional to 29,079.45, 40,129.70 and 16,988.22

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Solution

The fourth proportional to 29,079.45, 40,129.70 and 16,988.22 is: 23,443.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,079.45 : 40,129.70 = 16,988.22 : x
  2. Step 2: Convert to fraction form
    29,079.45/40,129.70 = 16,988.22/x
  3. Step 3: Cross multiply
    29,079.45x = 40,129.70 × 16,988.22
  4. Step 4: Simplify right side
    29,079.45x = 681,732,087.19
  5. Step 5: Solve for x
    x = 681,732,087.19/29,079.45
  6. Step 6: Final answer
    x = 23,443.78

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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.