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Finding the Fourth Proportional to 8,986.72, 13,462.18 and 7,029.76

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Solution

The fourth proportional to 8,986.72, 13,462.18 and 7,029.76 is: 10,530.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,986.72 : 13,462.18 = 7,029.76 : x
  2. Step 2: Convert to fraction form
    8,986.72/13,462.18 = 7,029.76/x
  3. Step 3: Cross multiply
    8,986.72x = 13,462.18 × 7,029.76
  4. Step 4: Simplify right side
    8,986.72x = 94,635,894.48
  5. Step 5: Solve for x
    x = 94,635,894.48/8,986.72
  6. Step 6: Final answer
    x = 10,530.64

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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.