Home / 28,283.11-42,442.53-15,811.32

Finding the Fourth Proportional to 28,283.11, 42,442.53 and 15,811.32

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Solution

The fourth proportional to 28,283.11, 42,442.53 and 15,811.32 is: 23,726.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,283.11 : 42,442.53 = 15,811.32 : x
  2. Step 2: Convert to fraction form
    28,283.11/42,442.53 = 15,811.32/x
  3. Step 3: Cross multiply
    28,283.11x = 42,442.53 × 15,811.32
  4. Step 4: Simplify right side
    28,283.11x = 671,072,423.44
  5. Step 5: Solve for x
    x = 671,072,423.44/28,283.11
  6. Step 6: Final answer
    x = 23,726.97

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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.