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Finding the Fourth Proportional to 12,266.61, 18,400.20 and 6,963.74

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Solution

The fourth proportional to 12,266.61, 18,400.20 and 6,963.74 is: 10,445.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,266.61 : 18,400.20 = 6,963.74 : x
  2. Step 2: Convert to fraction form
    12,266.61/18,400.20 = 6,963.74/x
  3. Step 3: Cross multiply
    12,266.61x = 18,400.20 × 6,963.74
  4. Step 4: Simplify right side
    12,266.61x = 128,134,159.63
  5. Step 5: Solve for x
    x = 128,134,159.63/12,266.61
  6. Step 6: Final answer
    x = 10,445.77

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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.