Home / 12,731.52-19,097.28-7,248

Finding the Fourth Proportional to 12,731.52, 19,097.28 and 7,248

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Solution

The fourth proportional to 12,731.52, 19,097.28 and 7,248 is: 10,872

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,731.52 : 19,097.28 = 7,248 : x
  2. Step 2: Convert to fraction form
    12,731.52/19,097.28 = 7,248/x
  3. Step 3: Cross multiply
    12,731.52x = 19,097.28 × 7,248
  4. Step 4: Simplify right side
    12,731.52x = 138,417,085.44
  5. Step 5: Solve for x
    x = 138,417,085.44/12,731.52
  6. Step 6: Final answer
    x = 10,872

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.