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Finding the Fourth Proportional to 12,952.20, 19,437.90 and 8,568.20

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Solution

The fourth proportional to 12,952.20, 19,437.90 and 8,568.20 is: 12,858.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,952.20 : 19,437.90 = 8,568.20 : x
  2. Step 2: Convert to fraction form
    12,952.20/19,437.90 = 8,568.20/x
  3. Step 3: Cross multiply
    12,952.20x = 19,437.90 × 8,568.20
  4. Step 4: Simplify right side
    12,952.20x = 166,547,814.78
  5. Step 5: Solve for x
    x = 166,547,814.78/12,952.20
  6. Step 6: Final answer
    x = 12,858.65

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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.