Home / 28,587.20-42,881.67-8,865.86

Finding the Fourth Proportional to 28,587.20, 42,881.67 and 8,865.86

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Solution

The fourth proportional to 28,587.20, 42,881.67 and 8,865.86 is: 13,299.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,587.20 : 42,881.67 = 8,865.86 : x
  2. Step 2: Convert to fraction form
    28,587.20/42,881.67 = 8,865.86/x
  3. Step 3: Cross multiply
    28,587.20x = 42,881.67 × 8,865.86
  4. Step 4: Simplify right side
    28,587.20x = 380,182,668.38
  5. Step 5: Solve for x
    x = 380,182,668.38/28,587.20
  6. Step 6: Final answer
    x = 13,299.05

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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.