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Finding the Fourth Proportional to 12,700.92, 19,018.38 and 8,764.32

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Solution

The fourth proportional to 12,700.92, 19,018.38 and 8,764.32 is: 13,123.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,700.92 : 19,018.38 = 8,764.32 : x
  2. Step 2: Convert to fraction form
    12,700.92/19,018.38 = 8,764.32/x
  3. Step 3: Cross multiply
    12,700.92x = 19,018.38 × 8,764.32
  4. Step 4: Simplify right side
    12,700.92x = 166,683,168.20
  5. Step 5: Solve for x
    x = 166,683,168.20/12,700.92
  6. Step 6: Final answer
    x = 13,123.71

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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.