Home / 20,321.68-28,095.24-15,008.08

Finding the Fourth Proportional to 20,321.68, 28,095.24 and 15,008.08

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Solution

The fourth proportional to 20,321.68, 28,095.24 and 15,008.08 is: 20,749.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321.68 : 28,095.24 = 15,008.08 : x
  2. Step 2: Convert to fraction form
    20,321.68/28,095.24 = 15,008.08/x
  3. Step 3: Cross multiply
    20,321.68x = 28,095.24 × 15,008.08
  4. Step 4: Simplify right side
    20,321.68x = 421,655,609.54
  5. Step 5: Solve for x
    x = 421,655,609.54/20,321.68
  6. Step 6: Final answer
    x = 20,749.05

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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.