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Finding the Fourth Proportional to 12,841.04, 17,719.80 and 7,252.40

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Solution

The fourth proportional to 12,841.04, 17,719.80 and 7,252.40 is: 10,007.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,841.04 : 17,719.80 = 7,252.40 : x
  2. Step 2: Convert to fraction form
    12,841.04/17,719.80 = 7,252.40/x
  3. Step 3: Cross multiply
    12,841.04x = 17,719.80 × 7,252.40
  4. Step 4: Simplify right side
    12,841.04x = 128,511,077.52
  5. Step 5: Solve for x
    x = 128,511,077.52/12,841.04
  6. Step 6: Final answer
    x = 10,007.84

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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.