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Finding the Fourth Proportional to 14,365.55, 19,824.07 and 7,991.81

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Solution

The fourth proportional to 14,365.55, 19,824.07 and 7,991.81 is: 11,028.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,365.55 : 19,824.07 = 7,991.81 : x
  2. Step 2: Convert to fraction form
    14,365.55/19,824.07 = 7,991.81/x
  3. Step 3: Cross multiply
    14,365.55x = 19,824.07 × 7,991.81
  4. Step 4: Simplify right side
    14,365.55x = 158,430,200.87
  5. Step 5: Solve for x
    x = 158,430,200.87/14,365.55
  6. Step 6: Final answer
    x = 11,028.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.