Home / 15,342.96-21,253.46-15,031.92

Finding the Fourth Proportional to 15,342.96, 21,253.46 and 15,031.92

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Solution

The fourth proportional to 15,342.96, 21,253.46 and 15,031.92 is: 20,822.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,342.96 : 21,253.46 = 15,031.92 : x
  2. Step 2: Convert to fraction form
    15,342.96/21,253.46 = 15,031.92/x
  3. Step 3: Cross multiply
    15,342.96x = 21,253.46 × 15,031.92
  4. Step 4: Simplify right side
    15,342.96x = 319,480,310.44
  5. Step 5: Solve for x
    x = 319,480,310.44/15,342.96
  6. Step 6: Final answer
    x = 20,822.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.