Home / 13,809.60-19,057.12-7,521.92

Finding the Fourth Proportional to 13,809.60, 19,057.12 and 7,521.92

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Solution

The fourth proportional to 13,809.60, 19,057.12 and 7,521.92 is: 10,380.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,809.60 : 19,057.12 = 7,521.92 : x
  2. Step 2: Convert to fraction form
    13,809.60/19,057.12 = 7,521.92/x
  3. Step 3: Cross multiply
    13,809.60x = 19,057.12 × 7,521.92
  4. Step 4: Simplify right side
    13,809.60x = 143,346,132.07
  5. Step 5: Solve for x
    x = 143,346,132.07/13,809.60
  6. Step 6: Final answer
    x = 10,380.18

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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.