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Finding the Fourth Proportional to 10,256.64, 15,384.96 and 7,975.68

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Solution

The fourth proportional to 10,256.64, 15,384.96 and 7,975.68 is: 11,963.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,256.64 : 15,384.96 = 7,975.68 : x
  2. Step 2: Convert to fraction form
    10,256.64/15,384.96 = 7,975.68/x
  3. Step 3: Cross multiply
    10,256.64x = 15,384.96 × 7,975.68
  4. Step 4: Simplify right side
    10,256.64x = 122,705,517.77
  5. Step 5: Solve for x
    x = 122,705,517.77/10,256.64
  6. Step 6: Final answer
    x = 11,963.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.