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Finding the Fourth Proportional to 12,956.44, 17,877.78 and 7,290.04

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Solution

The fourth proportional to 12,956.44, 17,877.78 and 7,290.04 is: 10,059.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,956.44 : 17,877.78 = 7,290.04 : x
  2. Step 2: Convert to fraction form
    12,956.44/17,877.78 = 7,290.04/x
  3. Step 3: Cross multiply
    12,956.44x = 17,877.78 × 7,290.04
  4. Step 4: Simplify right side
    12,956.44x = 130,329,731.31
  5. Step 5: Solve for x
    x = 130,329,731.31/12,956.44
  6. Step 6: Final answer
    x = 10,059.07

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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.