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Finding the Fourth Proportional to 18,924.51, 28,365.55 and 7,677.24

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Solution

The fourth proportional to 18,924.51, 28,365.55 and 7,677.24 is: 11,507.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,924.51 : 28,365.55 = 7,677.24 : x
  2. Step 2: Convert to fraction form
    18,924.51/28,365.55 = 7,677.24/x
  3. Step 3: Cross multiply
    18,924.51x = 28,365.55 × 7,677.24
  4. Step 4: Simplify right side
    18,924.51x = 217,768,954.87
  5. Step 5: Solve for x
    x = 217,768,954.87/18,924.51
  6. Step 6: Final answer
    x = 11,507.25

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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.