Home / 13,945.23-19,231.20-9,156.72

Finding the Fourth Proportional to 13,945.23, 19,231.20 and 9,156.72

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Solution

The fourth proportional to 13,945.23, 19,231.20 and 9,156.72 is: 12,627.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,945.23 : 19,231.20 = 9,156.72 : x
  2. Step 2: Convert to fraction form
    13,945.23/19,231.20 = 9,156.72/x
  3. Step 3: Cross multiply
    13,945.23x = 19,231.20 × 9,156.72
  4. Step 4: Simplify right side
    13,945.23x = 176,094,713.66
  5. Step 5: Solve for x
    x = 176,094,713.66/13,945.23
  6. Step 6: Final answer
    x = 12,627.59

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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.