Home / 28,298.20-42,447.30-18,448.60

Finding the Fourth Proportional to 28,298.20, 42,447.30 and 18,448.60

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Solution

The fourth proportional to 28,298.20, 42,447.30 and 18,448.60 is: 27,672.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,298.20 : 42,447.30 = 18,448.60 : x
  2. Step 2: Convert to fraction form
    28,298.20/42,447.30 = 18,448.60/x
  3. Step 3: Cross multiply
    28,298.20x = 42,447.30 × 18,448.60
  4. Step 4: Simplify right side
    28,298.20x = 783,093,258.78
  5. Step 5: Solve for x
    x = 783,093,258.78/28,298.20
  6. Step 6: Final answer
    x = 27,672.90

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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.