Home / 28,087.60-42,132.28-12,284.50

Finding the Fourth Proportional to 28,087.60, 42,132.28 and 12,284.50

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Solution

The fourth proportional to 28,087.60, 42,132.28 and 12,284.50 is: 18,427.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,087.60 : 42,132.28 = 12,284.50 : x
  2. Step 2: Convert to fraction form
    28,087.60/42,132.28 = 12,284.50/x
  3. Step 3: Cross multiply
    28,087.60x = 42,132.28 × 12,284.50
  4. Step 4: Simplify right side
    28,087.60x = 517,573,993.66
  5. Step 5: Solve for x
    x = 517,573,993.66/28,087.60
  6. Step 6: Final answer
    x = 18,427.13

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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.