Home / 30,700.29-42,366.47-18,125.85

Finding the Fourth Proportional to 30,700.29, 42,366.47 and 18,125.85

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Solution

The fourth proportional to 30,700.29, 42,366.47 and 18,125.85 is: 25,013.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,700.29 : 42,366.47 = 18,125.85 : x
  2. Step 2: Convert to fraction form
    30,700.29/42,366.47 = 18,125.85/x
  3. Step 3: Cross multiply
    30,700.29x = 42,366.47 × 18,125.85
  4. Step 4: Simplify right side
    30,700.29x = 767,928,189.62
  5. Step 5: Solve for x
    x = 767,928,189.62/30,700.29
  6. Step 6: Final answer
    x = 25,013.71

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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.