Home / 15,415.25-23,129.03-9,178.20

Finding the Fourth Proportional to 15,415.25, 23,129.03 and 9,178.20

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Solution

The fourth proportional to 15,415.25, 23,129.03 and 9,178.20 is: 13,770.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,415.25 : 23,129.03 = 9,178.20 : x
  2. Step 2: Convert to fraction form
    15,415.25/23,129.03 = 9,178.20/x
  3. Step 3: Cross multiply
    15,415.25x = 23,129.03 × 9,178.20
  4. Step 4: Simplify right side
    15,415.25x = 212,282,863.15
  5. Step 5: Solve for x
    x = 212,282,863.15/15,415.25
  6. Step 6: Final answer
    x = 13,770.96

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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.