Home / 28,701-39,612.24-21,186.36

Finding the Fourth Proportional to 28,701, 39,612.24 and 21,186.36

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Solution

The fourth proportional to 28,701, 39,612.24 and 21,186.36 is: 29,240.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,701 : 39,612.24 = 21,186.36 : x
  2. Step 2: Convert to fraction form
    28,701/39,612.24 = 21,186.36/x
  3. Step 3: Cross multiply
    28,701x = 39,612.24 × 21,186.36
  4. Step 4: Simplify right side
    28,701x = 839,239,177.05
  5. Step 5: Solve for x
    x = 839,239,177.05/28,701
  6. Step 6: Final answer
    x = 29,240.76

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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.