Home / 28,717.39-39,618.93-21,181.58

Finding the Fourth Proportional to 28,717.39, 39,618.93 and 21,181.58

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Solution

The fourth proportional to 28,717.39, 39,618.93 and 21,181.58 is: 29,222.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,717.39 : 39,618.93 = 21,181.58 : x
  2. Step 2: Convert to fraction form
    28,717.39/39,618.93 = 21,181.58/x
  3. Step 3: Cross multiply
    28,717.39x = 39,618.93 × 21,181.58
  4. Step 4: Simplify right side
    28,717.39x = 839,191,535.31
  5. Step 5: Solve for x
    x = 839,191,535.31/28,717.39
  6. Step 6: Final answer
    x = 29,222.42

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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.