Home / 28,013.64-38,657.44-15,266.78

Finding the Fourth Proportional to 28,013.64, 38,657.44 and 15,266.78

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Solution

The fourth proportional to 28,013.64, 38,657.44 and 15,266.78 is: 21,067.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,013.64 : 38,657.44 = 15,266.78 : x
  2. Step 2: Convert to fraction form
    28,013.64/38,657.44 = 15,266.78/x
  3. Step 3: Cross multiply
    28,013.64x = 38,657.44 × 15,266.78
  4. Step 4: Simplify right side
    28,013.64x = 590,174,747.57
  5. Step 5: Solve for x
    x = 590,174,747.57/28,013.64
  6. Step 6: Final answer
    x = 21,067.41

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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.