Home / 28,482.62-42,732.59-20,178.70

Finding the Fourth Proportional to 28,482.62, 42,732.59 and 20,178.70

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Solution

The fourth proportional to 28,482.62, 42,732.59 and 20,178.70 is: 30,274.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,482.62 : 42,732.59 = 20,178.70 : x
  2. Step 2: Convert to fraction form
    28,482.62/42,732.59 = 20,178.70/x
  3. Step 3: Cross multiply
    28,482.62x = 42,732.59 × 20,178.70
  4. Step 4: Simplify right side
    28,482.62x = 862,288,113.83
  5. Step 5: Solve for x
    x = 862,288,113.83/28,482.62
  6. Step 6: Final answer
    x = 30,274.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.