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Finding the Fourth Proportional to 12,680.01, 19,020.02 and 4,887

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Solution

The fourth proportional to 12,680.01, 19,020.02 and 4,887 is: 7,330.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,680.01 : 19,020.02 = 4,887 : x
  2. Step 2: Convert to fraction form
    12,680.01/19,020.02 = 4,887/x
  3. Step 3: Cross multiply
    12,680.01x = 19,020.02 × 4,887
  4. Step 4: Simplify right side
    12,680.01x = 92,950,813.31
  5. Step 5: Solve for x
    x = 92,950,813.31/12,680.01
  6. Step 6: Final answer
    x = 7,330.50

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Double scale
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Similar ratio
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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.