Home / 21,538.34-29,718.54-12,584.11

Finding the Fourth Proportional to 21,538.34, 29,718.54 and 12,584.11

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Solution

The fourth proportional to 21,538.34, 29,718.54 and 12,584.11 is: 17,363.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,538.34 : 29,718.54 = 12,584.11 : x
  2. Step 2: Convert to fraction form
    21,538.34/29,718.54 = 12,584.11/x
  3. Step 3: Cross multiply
    21,538.34x = 29,718.54 × 12,584.11
  4. Step 4: Simplify right side
    21,538.34x = 373,981,460.74
  5. Step 5: Solve for x
    x = 373,981,460.74/21,538.34
  6. Step 6: Final answer
    x = 17,363.52

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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.