Home / 28,565.75-42,820.81-11,930.54

Finding the Fourth Proportional to 28,565.75, 42,820.81 and 11,930.54

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Solution

The fourth proportional to 28,565.75, 42,820.81 and 11,930.54 is: 17,884.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,565.75 : 42,820.81 = 11,930.54 : x
  2. Step 2: Convert to fraction form
    28,565.75/42,820.81 = 11,930.54/x
  3. Step 3: Cross multiply
    28,565.75x = 42,820.81 × 11,930.54
  4. Step 4: Simplify right side
    28,565.75x = 510,875,142.61
  5. Step 5: Solve for x
    x = 510,875,142.61/28,565.75
  6. Step 6: Final answer
    x = 17,884.18

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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.