Home / 28,587.40-42,884.30-8,865.80

Finding the Fourth Proportional to 28,587.40, 42,884.30 and 8,865.80

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Solution

The fourth proportional to 28,587.40, 42,884.30 and 8,865.80 is: 13,299.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,587.40 : 42,884.30 = 8,865.80 : x
  2. Step 2: Convert to fraction form
    28,587.40/42,884.30 = 8,865.80/x
  3. Step 3: Cross multiply
    28,587.40x = 42,884.30 × 8,865.80
  4. Step 4: Simplify right side
    28,587.40x = 380,203,626.94
  5. Step 5: Solve for x
    x = 380,203,626.94/28,587.40
  6. Step 6: Final answer
    x = 13,299.69

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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.