Home / 21,372.12-29,501.76-19,130.04

Finding the Fourth Proportional to 21,372.12, 29,501.76 and 19,130.04

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Solution

The fourth proportional to 21,372.12, 29,501.76 and 19,130.04 is: 26,406.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,372.12 : 29,501.76 = 19,130.04 : x
  2. Step 2: Convert to fraction form
    21,372.12/29,501.76 = 19,130.04/x
  3. Step 3: Cross multiply
    21,372.12x = 29,501.76 × 19,130.04
  4. Step 4: Simplify right side
    21,372.12x = 564,369,922.62
  5. Step 5: Solve for x
    x = 564,369,922.62/21,372.12
  6. Step 6: Final answer
    x = 26,406.83

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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.