Home / 30,557-42,170.28-17,979.32

Finding the Fourth Proportional to 30,557, 42,170.28 and 17,979.32

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Solution

The fourth proportional to 30,557, 42,170.28 and 17,979.32 is: 24,812.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,557 : 42,170.28 = 17,979.32 : x
  2. Step 2: Convert to fraction form
    30,557/42,170.28 = 17,979.32/x
  3. Step 3: Cross multiply
    30,557x = 42,170.28 × 17,979.32
  4. Step 4: Simplify right side
    30,557x = 758,192,958.61
  5. Step 5: Solve for x
    x = 758,192,958.61/30,557
  6. Step 6: Final answer
    x = 24,812.41

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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.