Home / 18,987.15-28,482.35-4,949.04

Finding the Fourth Proportional to 18,987.15, 28,482.35 and 4,949.04

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Solution

The fourth proportional to 18,987.15, 28,482.35 and 4,949.04 is: 7,423.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,987.15 : 28,482.35 = 4,949.04 : x
  2. Step 2: Convert to fraction form
    18,987.15/28,482.35 = 4,949.04/x
  3. Step 3: Cross multiply
    18,987.15x = 28,482.35 × 4,949.04
  4. Step 4: Simplify right side
    18,987.15x = 140,960,264.70
  5. Step 5: Solve for x
    x = 140,960,264.70/18,987.15
  6. Step 6: Final answer
    x = 7,423.98

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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.