Home / 13,949.12-19,248.80-7,660.32

Finding the Fourth Proportional to 13,949.12, 19,248.80 and 7,660.32

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Solution

The fourth proportional to 13,949.12, 19,248.80 and 7,660.32 is: 10,570.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,949.12 : 19,248.80 = 7,660.32 : x
  2. Step 2: Convert to fraction form
    13,949.12/19,248.80 = 7,660.32/x
  3. Step 3: Cross multiply
    13,949.12x = 19,248.80 × 7,660.32
  4. Step 4: Simplify right side
    13,949.12x = 147,451,967.62
  5. Step 5: Solve for x
    x = 147,451,967.62/13,949.12
  6. Step 6: Final answer
    x = 10,570.70

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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.