Home / 28,084.19-42,134.16-12,290.60

Finding the Fourth Proportional to 28,084.19, 42,134.16 and 12,290.60

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Solution

The fourth proportional to 28,084.19, 42,134.16 and 12,290.60 is: 18,439.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,084.19 : 42,134.16 = 12,290.60 : x
  2. Step 2: Convert to fraction form
    28,084.19/42,134.16 = 12,290.60/x
  3. Step 3: Cross multiply
    28,084.19x = 42,134.16 × 12,290.60
  4. Step 4: Simplify right side
    28,084.19x = 517,854,106.90
  5. Step 5: Solve for x
    x = 517,854,106.90/28,084.19
  6. Step 6: Final answer
    x = 18,439.35

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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.