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Finding the Fourth Proportional to 12,955.92, 17,873.01 and 7,647.18

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Solution

The fourth proportional to 12,955.92, 17,873.01 and 7,647.18 is: 10,549.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,955.92 : 17,873.01 = 7,647.18 : x
  2. Step 2: Convert to fraction form
    12,955.92/17,873.01 = 7,647.18/x
  3. Step 3: Cross multiply
    12,955.92x = 17,873.01 × 7,647.18
  4. Step 4: Simplify right side
    12,955.92x = 136,678,124.61
  5. Step 5: Solve for x
    x = 136,678,124.61/12,955.92
  6. Step 6: Final answer
    x = 10,549.47

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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.