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Finding the Fourth Proportional to 12,677.61, 19,020.93 and 5,656.99

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Solution

The fourth proportional to 12,677.61, 19,020.93 and 5,656.99 is: 8,487.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,677.61 : 19,020.93 = 5,656.99 : x
  2. Step 2: Convert to fraction form
    12,677.61/19,020.93 = 5,656.99/x
  3. Step 3: Cross multiply
    12,677.61x = 19,020.93 × 5,656.99
  4. Step 4: Simplify right side
    12,677.61x = 107,601,177.70
  5. Step 5: Solve for x
    x = 107,601,177.70/12,677.61
  6. Step 6: Final answer
    x = 8,487.49

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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.