Home / 16,839.70-23,238.78-10,129.22

Finding the Fourth Proportional to 16,839.70, 23,238.78 and 10,129.22

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Solution

The fourth proportional to 16,839.70, 23,238.78 and 10,129.22 is: 13,978.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,839.70 : 23,238.78 = 10,129.22 : x
  2. Step 2: Convert to fraction form
    16,839.70/23,238.78 = 10,129.22/x
  3. Step 3: Cross multiply
    16,839.70x = 23,238.78 × 10,129.22
  4. Step 4: Simplify right side
    16,839.70x = 235,390,715.15
  5. Step 5: Solve for x
    x = 235,390,715.15/16,839.70
  6. Step 6: Final answer
    x = 13,978.32

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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.