Home / 13,949.40-19,250.48-7,981.62

Finding the Fourth Proportional to 13,949.40, 19,250.48 and 7,981.62

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Solution

The fourth proportional to 13,949.40, 19,250.48 and 7,981.62 is: 11,014.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,949.40 : 19,250.48 = 7,981.62 : x
  2. Step 2: Convert to fraction form
    13,949.40/19,250.48 = 7,981.62/x
  3. Step 3: Cross multiply
    13,949.40x = 19,250.48 × 7,981.62
  4. Step 4: Simplify right side
    13,949.40x = 153,650,016.18
  5. Step 5: Solve for x
    x = 153,650,016.18/13,949.40
  6. Step 6: Final answer
    x = 11,014.81

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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.