Home / 28,061.68-38,727.48-15,489.04

Finding the Fourth Proportional to 28,061.68, 38,727.48 and 15,489.04

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Solution

The fourth proportional to 28,061.68, 38,727.48 and 15,489.04 is: 21,376.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,061.68 : 38,727.48 = 15,489.04 : x
  2. Step 2: Convert to fraction form
    28,061.68/38,727.48 = 15,489.04/x
  3. Step 3: Cross multiply
    28,061.68x = 38,727.48 × 15,489.04
  4. Step 4: Simplify right side
    28,061.68x = 599,851,486.82
  5. Step 5: Solve for x
    x = 599,851,486.82/28,061.68
  6. Step 6: Final answer
    x = 21,376.18

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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.