Home / 15,111.86-20,853.96-8,397.32

Finding the Fourth Proportional to 15,111.86, 20,853.96 and 8,397.32

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Solution

The fourth proportional to 15,111.86, 20,853.96 and 8,397.32 is: 11,588.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,111.86 : 20,853.96 = 8,397.32 : x
  2. Step 2: Convert to fraction form
    15,111.86/20,853.96 = 8,397.32/x
  3. Step 3: Cross multiply
    15,111.86x = 20,853.96 × 8,397.32
  4. Step 4: Simplify right side
    15,111.86x = 175,117,375.39
  5. Step 5: Solve for x
    x = 175,117,375.39/15,111.86
  6. Step 6: Final answer
    x = 11,588.08

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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.