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Finding the Fourth Proportional to 10,365.80, 15,564.90 and 5,991.80

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Solution

The fourth proportional to 10,365.80, 15,564.90 and 5,991.80 is: 8,997.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,365.80 : 15,564.90 = 5,991.80 : x
  2. Step 2: Convert to fraction form
    10,365.80/15,564.90 = 5,991.80/x
  3. Step 3: Cross multiply
    10,365.80x = 15,564.90 × 5,991.80
  4. Step 4: Simplify right side
    10,365.80x = 93,261,767.82
  5. Step 5: Solve for x
    x = 93,261,767.82/10,365.80
  6. Step 6: Final answer
    x = 8,997.06

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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.