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Finding the Fourth Proportional to 12,618.79, 18,935.02 and 4,726.68

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Solution

The fourth proportional to 12,618.79, 18,935.02 and 4,726.68 is: 7,092.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,618.79 : 18,935.02 = 4,726.68 : x
  2. Step 2: Convert to fraction form
    12,618.79/18,935.02 = 4,726.68/x
  3. Step 3: Cross multiply
    12,618.79x = 18,935.02 × 4,726.68
  4. Step 4: Simplify right side
    12,618.79x = 89,499,741.90
  5. Step 5: Solve for x
    x = 89,499,741.90/12,618.79
  6. Step 6: Final answer
    x = 7,092.58

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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.