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Finding the Fourth Proportional to 12,482.39, 18,726.83 and 6,242.15

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Solution

The fourth proportional to 12,482.39, 18,726.83 and 6,242.15 is: 9,364.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,482.39 : 18,726.83 = 6,242.15 : x
  2. Step 2: Convert to fraction form
    12,482.39/18,726.83 = 6,242.15/x
  3. Step 3: Cross multiply
    12,482.39x = 18,726.83 × 6,242.15
  4. Step 4: Simplify right side
    12,482.39x = 116,895,557.04
  5. Step 5: Solve for x
    x = 116,895,557.04/12,482.39
  6. Step 6: Final answer
    x = 9,364.84

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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.