Home / 31,471.05-43,428.66-17,130.90

Finding the Fourth Proportional to 31,471.05, 43,428.66 and 17,130.90

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Solution

The fourth proportional to 31,471.05, 43,428.66 and 17,130.90 is: 23,639.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,471.05 : 43,428.66 = 17,130.90 : x
  2. Step 2: Convert to fraction form
    31,471.05/43,428.66 = 17,130.90/x
  3. Step 3: Cross multiply
    31,471.05x = 43,428.66 × 17,130.90
  4. Step 4: Simplify right side
    31,471.05x = 743,972,031.59
  5. Step 5: Solve for x
    x = 743,972,031.59/31,471.05
  6. Step 6: Final answer
    x = 23,639.89

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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.