Home / 18,872.49-28,312.80-5,725.83

Finding the Fourth Proportional to 18,872.49, 28,312.80 and 5,725.83

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Solution

The fourth proportional to 18,872.49, 28,312.80 and 5,725.83 is: 8,589.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,872.49 : 28,312.80 = 5,725.83 : x
  2. Step 2: Convert to fraction form
    18,872.49/28,312.80 = 5,725.83/x
  3. Step 3: Cross multiply
    18,872.49x = 28,312.80 × 5,725.83
  4. Step 4: Simplify right side
    18,872.49x = 162,114,279.62
  5. Step 5: Solve for x
    x = 162,114,279.62/18,872.49
  6. Step 6: Final answer
    x = 8,589.98

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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.