Home / 30,723.49-42,398.43-17,979.13

Finding the Fourth Proportional to 30,723.49, 42,398.43 and 17,979.13

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Solution

The fourth proportional to 30,723.49, 42,398.43 and 17,979.13 is: 24,811.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,723.49 : 42,398.43 = 17,979.13 : x
  2. Step 2: Convert to fraction form
    30,723.49/42,398.43 = 17,979.13/x
  3. Step 3: Cross multiply
    30,723.49x = 42,398.43 × 17,979.13
  4. Step 4: Simplify right side
    30,723.49x = 762,286,884.77
  5. Step 5: Solve for x
    x = 762,286,884.77/30,723.49
  6. Step 6: Final answer
    x = 24,811.21

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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.