Home / 15,375.42-21,218.40-8,569.86

Finding the Fourth Proportional to 15,375.42, 21,218.40 and 8,569.86

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Solution

The fourth proportional to 15,375.42, 21,218.40 and 8,569.86 is: 11,826.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,375.42 : 21,218.40 = 8,569.86 : x
  2. Step 2: Convert to fraction form
    15,375.42/21,218.40 = 8,569.86/x
  3. Step 3: Cross multiply
    15,375.42x = 21,218.40 × 8,569.86
  4. Step 4: Simplify right side
    15,375.42x = 181,838,717.42
  5. Step 5: Solve for x
    x = 181,838,717.42/15,375.42
  6. Step 6: Final answer
    x = 11,826.59

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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.