Home / 13,952.48-19,255.20-7,982.78

Finding the Fourth Proportional to 13,952.48, 19,255.20 and 7,982.78

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Solution

The fourth proportional to 13,952.48, 19,255.20 and 7,982.78 is: 11,016.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,952.48 : 19,255.20 = 7,982.78 : x
  2. Step 2: Convert to fraction form
    13,952.48/19,255.20 = 7,982.78/x
  3. Step 3: Cross multiply
    13,952.48x = 19,255.20 × 7,982.78
  4. Step 4: Simplify right side
    13,952.48x = 153,710,025.46
  5. Step 5: Solve for x
    x = 153,710,025.46/13,952.48
  6. Step 6: Final answer
    x = 11,016.68

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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.