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Finding the Fourth Proportional to 11,110.78, 16,637.01 and 7,805.98

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Solution

The fourth proportional to 11,110.78, 16,637.01 and 7,805.98 is: 11,688.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,110.78 : 16,637.01 = 7,805.98 : x
  2. Step 2: Convert to fraction form
    11,110.78/16,637.01 = 7,805.98/x
  3. Step 3: Cross multiply
    11,110.78x = 16,637.01 × 7,805.98
  4. Step 4: Simplify right side
    11,110.78x = 129,868,167.32
  5. Step 5: Solve for x
    x = 129,868,167.32/11,110.78
  6. Step 6: Final answer
    x = 11,688.48

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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.