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Finding the Fourth Proportional to 12,482.64, 18,726.48 and 6,246.72

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Solution

The fourth proportional to 12,482.64, 18,726.48 and 6,246.72 is: 9,371.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,482.64 : 18,726.48 = 6,246.72 : x
  2. Step 2: Convert to fraction form
    12,482.64/18,726.48 = 6,246.72/x
  3. Step 3: Cross multiply
    12,482.64x = 18,726.48 × 6,246.72
  4. Step 4: Simplify right side
    12,482.64x = 116,979,077.15
  5. Step 5: Solve for x
    x = 116,979,077.15/12,482.64
  6. Step 6: Final answer
    x = 9,371.34

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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.