Home / 15,418.95-23,135.47-8,388.43

Finding the Fourth Proportional to 15,418.95, 23,135.47 and 8,388.43

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Solution

The fourth proportional to 15,418.95, 23,135.47 and 8,388.43 is: 12,586.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,418.95 : 23,135.47 = 8,388.43 : x
  2. Step 2: Convert to fraction form
    15,418.95/23,135.47 = 8,388.43/x
  3. Step 3: Cross multiply
    15,418.95x = 23,135.47 × 8,388.43
  4. Step 4: Simplify right side
    15,418.95x = 194,070,154.93
  5. Step 5: Solve for x
    x = 194,070,154.93/15,418.95
  6. Step 6: Final answer
    x = 12,586.47

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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.