Home / 28,335.42-39,103.56-15,760.98

Finding the Fourth Proportional to 28,335.42, 39,103.56 and 15,760.98

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Solution

The fourth proportional to 28,335.42, 39,103.56 and 15,760.98 is: 21,750.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,335.42 : 39,103.56 = 15,760.98 : x
  2. Step 2: Convert to fraction form
    28,335.42/39,103.56 = 15,760.98/x
  3. Step 3: Cross multiply
    28,335.42x = 39,103.56 × 15,760.98
  4. Step 4: Simplify right side
    28,335.42x = 616,310,427.09
  5. Step 5: Solve for x
    x = 616,310,427.09/28,335.42
  6. Step 6: Final answer
    x = 21,750.53

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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.