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Finding the Fourth Proportional to 12,492.92, 17,248.20 and 7,784.12

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Solution

The fourth proportional to 12,492.92, 17,248.20 and 7,784.12 is: 10,747.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,492.92 : 17,248.20 = 7,784.12 : x
  2. Step 2: Convert to fraction form
    12,492.92/17,248.20 = 7,784.12/x
  3. Step 3: Cross multiply
    12,492.92x = 17,248.20 × 7,784.12
  4. Step 4: Simplify right side
    12,492.92x = 134,262,058.58
  5. Step 5: Solve for x
    x = 134,262,058.58/12,492.92
  6. Step 6: Final answer
    x = 10,747.05

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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.