Home / 31,278.26-43,162.39-17,130.80

Finding the Fourth Proportional to 31,278.26, 43,162.39 and 17,130.80

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Solution

The fourth proportional to 31,278.26, 43,162.39 and 17,130.80 is: 23,639.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,278.26 : 43,162.39 = 17,130.80 : x
  2. Step 2: Convert to fraction form
    31,278.26/43,162.39 = 17,130.80/x
  3. Step 3: Cross multiply
    31,278.26x = 43,162.39 × 17,130.80
  4. Step 4: Simplify right side
    31,278.26x = 739,406,270.61
  5. Step 5: Solve for x
    x = 739,406,270.61/31,278.26
  6. Step 6: Final answer
    x = 23,639.62

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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.