Home / 31,287.94-43,177.14-16,947.45

Finding the Fourth Proportional to 31,287.94, 43,177.14 and 16,947.45

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Solution

The fourth proportional to 31,287.94, 43,177.14 and 16,947.45 is: 23,387.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,287.94 : 43,177.14 = 16,947.45 : x
  2. Step 2: Convert to fraction form
    31,287.94/43,177.14 = 16,947.45/x
  3. Step 3: Cross multiply
    31,287.94x = 43,177.14 × 16,947.45
  4. Step 4: Simplify right side
    31,287.94x = 731,742,421.29
  5. Step 5: Solve for x
    x = 731,742,421.29/31,287.94
  6. Step 6: Final answer
    x = 23,387.36

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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.