Home / 13,578.99-20,387.93-10,079.79

Finding the Fourth Proportional to 13,578.99, 20,387.93 and 10,079.79

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Solution

The fourth proportional to 13,578.99, 20,387.93 and 10,079.79 is: 15,134.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,578.99 : 20,387.93 = 10,079.79 : x
  2. Step 2: Convert to fraction form
    13,578.99/20,387.93 = 10,079.79/x
  3. Step 3: Cross multiply
    13,578.99x = 20,387.93 × 10,079.79
  4. Step 4: Simplify right side
    13,578.99x = 205,506,002.54
  5. Step 5: Solve for x
    x = 205,506,002.54/13,578.99
  6. Step 6: Final answer
    x = 15,134.12

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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.