Home / 31,147.81-42,988.08-17,716.47

Finding the Fourth Proportional to 31,147.81, 42,988.08 and 17,716.47

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Solution

The fourth proportional to 31,147.81, 42,988.08 and 17,716.47 is: 24,451.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,147.81 : 42,988.08 = 17,716.47 : x
  2. Step 2: Convert to fraction form
    31,147.81/42,988.08 = 17,716.47/x
  3. Step 3: Cross multiply
    31,147.81x = 42,988.08 × 17,716.47
  4. Step 4: Simplify right side
    31,147.81x = 761,597,029.68
  5. Step 5: Solve for x
    x = 761,597,029.68/31,147.81
  6. Step 6: Final answer
    x = 24,451.06

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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.