Home / 12,435.46-17,160.42-7,129.96

Finding the Fourth Proportional to 12,435.46, 17,160.42 and 7,129.96

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Solution

The fourth proportional to 12,435.46, 17,160.42 and 7,129.96 is: 9,839.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,435.46 : 17,160.42 = 7,129.96 : x
  2. Step 2: Convert to fraction form
    12,435.46/17,160.42 = 7,129.96/x
  3. Step 3: Cross multiply
    12,435.46x = 17,160.42 × 7,129.96
  4. Step 4: Simplify right side
    12,435.46x = 122,353,108.18
  5. Step 5: Solve for x
    x = 122,353,108.18/12,435.46
  6. Step 6: Final answer
    x = 9,839.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.