Home / 28,346.38-39,118.02-15,771.12

Finding the Fourth Proportional to 28,346.38, 39,118.02 and 15,771.12

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Solution

The fourth proportional to 28,346.38, 39,118.02 and 15,771.12 is: 21,764.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,346.38 : 39,118.02 = 15,771.12 : x
  2. Step 2: Convert to fraction form
    28,346.38/39,118.02 = 15,771.12/x
  3. Step 3: Cross multiply
    28,346.38x = 39,118.02 × 15,771.12
  4. Step 4: Simplify right side
    28,346.38x = 616,934,987.58
  5. Step 5: Solve for x
    x = 616,934,987.58/28,346.38
  6. Step 6: Final answer
    x = 21,764.15

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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.