Home / 21,542.49-32,312.01-13,621.91

Finding the Fourth Proportional to 21,542.49, 32,312.01 and 13,621.91

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Solution

The fourth proportional to 21,542.49, 32,312.01 and 13,621.91 is: 20,431.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,542.49 : 32,312.01 = 13,621.91 : x
  2. Step 2: Convert to fraction form
    21,542.49/32,312.01 = 13,621.91/x
  3. Step 3: Cross multiply
    21,542.49x = 32,312.01 × 13,621.91
  4. Step 4: Simplify right side
    21,542.49x = 440,151,181.66
  5. Step 5: Solve for x
    x = 440,151,181.66/21,542.49
  6. Step 6: Final answer
    x = 20,431.77

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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.