Home / 13,949.28-19,247.22-7,980.66

Finding the Fourth Proportional to 13,949.28, 19,247.22 and 7,980.66

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Solution

The fourth proportional to 13,949.28, 19,247.22 and 7,980.66 is: 11,011.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,949.28 : 19,247.22 = 7,980.66 : x
  2. Step 2: Convert to fraction form
    13,949.28/19,247.22 = 7,980.66/x
  3. Step 3: Cross multiply
    13,949.28x = 19,247.22 × 7,980.66
  4. Step 4: Simplify right side
    13,949.28x = 153,605,518.77
  5. Step 5: Solve for x
    x = 153,605,518.77/13,949.28
  6. Step 6: Final answer
    x = 11,011.72

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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.