Home / 15,112.43-20,853.83-8,397.63

Finding the Fourth Proportional to 15,112.43, 20,853.83 and 8,397.63

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Solution

The fourth proportional to 15,112.43, 20,853.83 and 8,397.63 is: 11,587.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,112.43 : 20,853.83 = 8,397.63 : x
  2. Step 2: Convert to fraction form
    15,112.43/20,853.83 = 8,397.63/x
  3. Step 3: Cross multiply
    15,112.43x = 20,853.83 × 8,397.63
  4. Step 4: Simplify right side
    15,112.43x = 175,122,779.56
  5. Step 5: Solve for x
    x = 175,122,779.56/15,112.43
  6. Step 6: Final answer
    x = 11,587.99

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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.