Home / 28,195.43-38,909.66-15,449.40

Finding the Fourth Proportional to 28,195.43, 38,909.66 and 15,449.40

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Solution

The fourth proportional to 28,195.43, 38,909.66 and 15,449.40 is: 21,320.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,195.43 : 38,909.66 = 15,449.40 : x
  2. Step 2: Convert to fraction form
    28,195.43/38,909.66 = 15,449.40/x
  3. Step 3: Cross multiply
    28,195.43x = 38,909.66 × 15,449.40
  4. Step 4: Simplify right side
    28,195.43x = 601,130,823.96
  5. Step 5: Solve for x
    x = 601,130,823.96/28,195.43
  6. Step 6: Final answer
    x = 21,320.15

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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.