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Finding the Fourth Proportional to 12,952.70, 19,438.65 and 8,568.70

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Solution

The fourth proportional to 12,952.70, 19,438.65 and 8,568.70 is: 12,859.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,952.70 : 19,438.65 = 8,568.70 : x
  2. Step 2: Convert to fraction form
    12,952.70/19,438.65 = 8,568.70/x
  3. Step 3: Cross multiply
    12,952.70x = 19,438.65 × 8,568.70
  4. Step 4: Simplify right side
    12,952.70x = 166,563,960.26
  5. Step 5: Solve for x
    x = 166,563,960.26/12,952.70
  6. Step 6: Final answer
    x = 12,859.40

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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.