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Finding the Fourth Proportional to 12,955.07, 17,878.10 and 7,652.54

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Solution

The fourth proportional to 12,955.07, 17,878.10 and 7,652.54 is: 10,560.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,955.07 : 17,878.10 = 7,652.54 : x
  2. Step 2: Convert to fraction form
    12,955.07/17,878.10 = 7,652.54/x
  3. Step 3: Cross multiply
    12,955.07x = 17,878.10 × 7,652.54
  4. Step 4: Simplify right side
    12,955.07x = 136,812,747.72
  5. Step 5: Solve for x
    x = 136,812,747.72/12,955.07
  6. Step 6: Final answer
    x = 10,560.56

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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.