Home / 28,233.12-38,961.44-15,486.04

Finding the Fourth Proportional to 28,233.12, 38,961.44 and 15,486.04

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Solution

The fourth proportional to 28,233.12, 38,961.44 and 15,486.04 is: 21,370.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,233.12 : 38,961.44 = 15,486.04 : x
  2. Step 2: Convert to fraction form
    28,233.12/38,961.44 = 15,486.04/x
  3. Step 3: Cross multiply
    28,233.12x = 38,961.44 × 15,486.04
  4. Step 4: Simplify right side
    28,233.12x = 603,358,243.46
  5. Step 5: Solve for x
    x = 603,358,243.46/28,233.12
  6. Step 6: Final answer
    x = 21,370.58

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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.