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Finding the Fourth Proportional to 28,097.58, 38,775.58 and 15,351.93

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Solution

The fourth proportional to 28,097.58, 38,775.58 and 15,351.93 is: 21,186.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,097.58 : 38,775.58 = 15,351.93 : x
  2. Step 2: Convert to fraction form
    28,097.58/38,775.58 = 15,351.93/x
  3. Step 3: Cross multiply
    28,097.58x = 38,775.58 × 15,351.93
  4. Step 4: Simplify right side
    28,097.58x = 595,279,951.49
  5. Step 5: Solve for x
    x = 595,279,951.49/28,097.58
  6. Step 6: Final answer
    x = 21,186.16

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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.