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Finding the Fourth Proportional to 18,995.80, 26,214.18 and 10,612.30

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Solution

The fourth proportional to 18,995.80, 26,214.18 and 10,612.30 is: 14,644.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,995.80 : 26,214.18 = 10,612.30 : x
  2. Step 2: Convert to fraction form
    18,995.80/26,214.18 = 10,612.30/x
  3. Step 3: Cross multiply
    18,995.80x = 26,214.18 × 10,612.30
  4. Step 4: Simplify right side
    18,995.80x = 278,192,742.41
  5. Step 5: Solve for x
    x = 278,192,742.41/18,995.80
  6. Step 6: Final answer
    x = 14,644.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.