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Finding the Fourth Proportional to 8,960.40, 13,452.12 and 7,019.28

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Solution

The fourth proportional to 8,960.40, 13,452.12 and 7,019.28 is: 10,537.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,960.40 : 13,452.12 = 7,019.28 : x
  2. Step 2: Convert to fraction form
    8,960.40/13,452.12 = 7,019.28/x
  3. Step 3: Cross multiply
    8,960.40x = 13,452.12 × 7,019.28
  4. Step 4: Simplify right side
    8,960.40x = 94,424,196.87
  5. Step 5: Solve for x
    x = 94,424,196.87/8,960.40
  6. Step 6: Final answer
    x = 10,537.94

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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.