Home / 12,445.61-17,174.80-7,141.25

Finding the Fourth Proportional to 12,445.61, 17,174.80 and 7,141.25

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Solution

The fourth proportional to 12,445.61, 17,174.80 and 7,141.25 is: 9,854.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,445.61 : 17,174.80 = 7,141.25 : x
  2. Step 2: Convert to fraction form
    12,445.61/17,174.80 = 7,141.25/x
  3. Step 3: Cross multiply
    12,445.61x = 17,174.80 × 7,141.25
  4. Step 4: Simplify right side
    12,445.61x = 122,649,592.36
  5. Step 5: Solve for x
    x = 122,649,592.36/12,445.61
  6. Step 6: Final answer
    x = 9,854.85

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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.