Home / 31,409.28-43,344.05-17,979.68

Finding the Fourth Proportional to 31,409.28, 43,344.05 and 17,979.68

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Solution

The fourth proportional to 31,409.28, 43,344.05 and 17,979.68 is: 24,811.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,409.28 : 43,344.05 = 17,979.68 : x
  2. Step 2: Convert to fraction form
    31,409.28/43,344.05 = 17,979.68/x
  3. Step 3: Cross multiply
    31,409.28x = 43,344.05 × 17,979.68
  4. Step 4: Simplify right side
    31,409.28x = 779,312,167.37
  5. Step 5: Solve for x
    x = 779,312,167.37/31,409.28
  6. Step 6: Final answer
    x = 24,811.53

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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.