Home / 28,266.42-39,009.69-15,691.08

Finding the Fourth Proportional to 28,266.42, 39,009.69 and 15,691.08

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Solution

The fourth proportional to 28,266.42, 39,009.69 and 15,691.08 is: 21,654.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,266.42 : 39,009.69 = 15,691.08 : x
  2. Step 2: Convert to fraction form
    28,266.42/39,009.69 = 15,691.08/x
  3. Step 3: Cross multiply
    28,266.42x = 39,009.69 × 15,691.08
  4. Step 4: Simplify right side
    28,266.42x = 612,104,166.57
  5. Step 5: Solve for x
    x = 612,104,166.57/28,266.42
  6. Step 6: Final answer
    x = 21,654.82

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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.