Home / 28,115.46-42,184.85-12,312.33

Finding the Fourth Proportional to 28,115.46, 42,184.85 and 12,312.33

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Solution

The fourth proportional to 28,115.46, 42,184.85 and 12,312.33 is: 18,473.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,115.46 : 42,184.85 = 12,312.33 : x
  2. Step 2: Convert to fraction form
    28,115.46/42,184.85 = 12,312.33/x
  3. Step 3: Cross multiply
    28,115.46x = 42,184.85 × 12,312.33
  4. Step 4: Simplify right side
    28,115.46x = 519,393,794.20
  5. Step 5: Solve for x
    x = 519,393,794.20/28,115.46
  6. Step 6: Final answer
    x = 18,473.60

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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.