Home / 30,711.35-42,366.62-18,753.99

Finding the Fourth Proportional to 30,711.35, 42,366.62 and 18,753.99

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Solution

The fourth proportional to 30,711.35, 42,366.62 and 18,753.99 is: 25,871.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,711.35 : 42,366.62 = 18,753.99 : x
  2. Step 2: Convert to fraction form
    30,711.35/42,366.62 = 18,753.99/x
  3. Step 3: Cross multiply
    30,711.35x = 42,366.62 × 18,753.99
  4. Step 4: Simplify right side
    30,711.35x = 794,543,074.04
  5. Step 5: Solve for x
    x = 794,543,074.04/30,711.35
  6. Step 6: Final answer
    x = 25,871.32

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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.