Home / 28,458.20-42,693.65-8,738.75

Finding the Fourth Proportional to 28,458.20, 42,693.65 and 8,738.75

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Solution

The fourth proportional to 28,458.20, 42,693.65 and 8,738.75 is: 13,110.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,458.20 : 42,693.65 = 8,738.75 : x
  2. Step 2: Convert to fraction form
    28,458.20/42,693.65 = 8,738.75/x
  3. Step 3: Cross multiply
    28,458.20x = 42,693.65 × 8,738.75
  4. Step 4: Simplify right side
    28,458.20x = 373,088,876.78
  5. Step 5: Solve for x
    x = 373,088,876.78/28,458.20
  6. Step 6: Final answer
    x = 13,110.07

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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.