Home / 13,621.28-20,397.36-10,879.52

Finding the Fourth Proportional to 13,621.28, 20,397.36 and 10,879.52

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Solution

The fourth proportional to 13,621.28, 20,397.36 and 10,879.52 is: 16,291.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.28 : 20,397.36 = 10,879.52 : x
  2. Step 2: Convert to fraction form
    13,621.28/20,397.36 = 10,879.52/x
  3. Step 3: Cross multiply
    13,621.28x = 20,397.36 × 10,879.52
  4. Step 4: Simplify right side
    13,621.28x = 221,913,486.07
  5. Step 5: Solve for x
    x = 221,913,486.07/13,621.28
  6. Step 6: Final answer
    x = 16,291.68

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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.