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Finding the Fourth Proportional to 18,814.68, 28,208.88 and 8,948.88

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Solution

The fourth proportional to 18,814.68, 28,208.88 and 8,948.88 is: 13,417.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,814.68 : 28,208.88 = 8,948.88 : x
  2. Step 2: Convert to fraction form
    18,814.68/28,208.88 = 8,948.88/x
  3. Step 3: Cross multiply
    18,814.68x = 28,208.88 × 8,948.88
  4. Step 4: Simplify right side
    18,814.68x = 252,437,882.05
  5. Step 5: Solve for x
    x = 252,437,882.05/18,814.68
  6. Step 6: Final answer
    x = 13,417.07

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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.