Home / 21,523.62-29,621.70-18,210

Finding the Fourth Proportional to 21,523.62, 29,621.70 and 18,210

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Solution

The fourth proportional to 21,523.62, 29,621.70 and 18,210 is: 25,061.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,523.62 : 29,621.70 = 18,210 : x
  2. Step 2: Convert to fraction form
    21,523.62/29,621.70 = 18,210/x
  3. Step 3: Cross multiply
    21,523.62x = 29,621.70 × 18,210
  4. Step 4: Simplify right side
    21,523.62x = 539,411,157
  5. Step 5: Solve for x
    x = 539,411,157/21,523.62
  6. Step 6: Final answer
    x = 25,061.36

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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.