Home / 28,158.78-42,258.93-13,367.82

Finding the Fourth Proportional to 28,158.78, 42,258.93 and 13,367.82

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Solution

The fourth proportional to 28,158.78, 42,258.93 and 13,367.82 is: 20,061.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,158.78 : 42,258.93 = 13,367.82 : x
  2. Step 2: Convert to fraction form
    28,158.78/42,258.93 = 13,367.82/x
  3. Step 3: Cross multiply
    28,158.78x = 42,258.93 × 13,367.82
  4. Step 4: Simplify right side
    28,158.78x = 564,909,769.63
  5. Step 5: Solve for x
    x = 564,909,769.63/28,158.78
  6. Step 6: Final answer
    x = 20,061.59

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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.