Home / 13,839.76-20,707.68-13,089.52

Finding the Fourth Proportional to 13,839.76, 20,707.68 and 13,089.52

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Solution

The fourth proportional to 13,839.76, 20,707.68 and 13,089.52 is: 19,585.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,839.76 : 20,707.68 = 13,089.52 : x
  2. Step 2: Convert to fraction form
    13,839.76/20,707.68 = 13,089.52/x
  3. Step 3: Cross multiply
    13,839.76x = 20,707.68 × 13,089.52
  4. Step 4: Simplify right side
    13,839.76x = 271,053,591.51
  5. Step 5: Solve for x
    x = 271,053,591.51/13,839.76
  6. Step 6: Final answer
    x = 19,585.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.