Home / 13,949.58-19,248.12-7,980.69

Finding the Fourth Proportional to 13,949.58, 19,248.12 and 7,980.69

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Solution

The fourth proportional to 13,949.58, 19,248.12 and 7,980.69 is: 11,012.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,949.58 : 19,248.12 = 7,980.69 : x
  2. Step 2: Convert to fraction form
    13,949.58/19,248.12 = 7,980.69/x
  3. Step 3: Cross multiply
    13,949.58x = 19,248.12 × 7,980.69
  4. Step 4: Simplify right side
    13,949.58x = 153,613,278.80
  5. Step 5: Solve for x
    x = 153,613,278.80/13,949.58
  6. Step 6: Final answer
    x = 11,012.04

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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.