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Finding the Fourth Proportional to 28,097.52, 38,775.36 and 15,523.08

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Solution

The fourth proportional to 28,097.52, 38,775.36 and 15,523.08 is: 21,422.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,097.52 : 38,775.36 = 15,523.08 : x
  2. Step 2: Convert to fraction form
    28,097.52/38,775.36 = 15,523.08/x
  3. Step 3: Cross multiply
    28,097.52x = 38,775.36 × 15,523.08
  4. Step 4: Simplify right side
    28,097.52x = 601,913,015.31
  5. Step 5: Solve for x
    x = 601,913,015.31/28,097.52
  6. Step 6: Final answer
    x = 21,422.28

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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.