Home / 12,621.41-17,417.89-6,956.78

Finding the Fourth Proportional to 12,621.41, 17,417.89 and 6,956.78

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Solution

The fourth proportional to 12,621.41, 17,417.89 and 6,956.78 is: 9,600.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621.41 : 17,417.89 = 6,956.78 : x
  2. Step 2: Convert to fraction form
    12,621.41/17,417.89 = 6,956.78/x
  3. Step 3: Cross multiply
    12,621.41x = 17,417.89 × 6,956.78
  4. Step 4: Simplify right side
    12,621.41x = 121,172,428.79
  5. Step 5: Solve for x
    x = 121,172,428.79/12,621.41
  6. Step 6: Final answer
    x = 9,600.55

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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.