Home / 18,850.40-28,280.04-5,702.88

Finding the Fourth Proportional to 18,850.40, 28,280.04 and 5,702.88

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Solution

The fourth proportional to 18,850.40, 28,280.04 and 5,702.88 is: 8,555.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,850.40 : 28,280.04 = 5,702.88 : x
  2. Step 2: Convert to fraction form
    18,850.40/28,280.04 = 5,702.88/x
  3. Step 3: Cross multiply
    18,850.40x = 28,280.04 × 5,702.88
  4. Step 4: Simplify right side
    18,850.40x = 161,277,674.52
  5. Step 5: Solve for x
    x = 161,277,674.52/18,850.40
  6. Step 6: Final answer
    x = 8,555.66

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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.