Home / 15,408.30-23,112.45-11,520.30

Finding the Fourth Proportional to 15,408.30, 23,112.45 and 11,520.30

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Solution

The fourth proportional to 15,408.30, 23,112.45 and 11,520.30 is: 17,280.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,408.30 : 23,112.45 = 11,520.30 : x
  2. Step 2: Convert to fraction form
    15,408.30/23,112.45 = 11,520.30/x
  3. Step 3: Cross multiply
    15,408.30x = 23,112.45 × 11,520.30
  4. Step 4: Simplify right side
    15,408.30x = 266,262,357.74
  5. Step 5: Solve for x
    x = 266,262,357.74/15,408.30
  6. Step 6: Final answer
    x = 17,280.45

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1.5x scale

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.