Home / 21,408.04-29,545.14-11,977.48

Finding the Fourth Proportional to 21,408.04, 29,545.14 and 11,977.48

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Solution

The fourth proportional to 21,408.04, 29,545.14 and 11,977.48 is: 16,530.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,408.04 : 29,545.14 = 11,977.48 : x
  2. Step 2: Convert to fraction form
    21,408.04/29,545.14 = 11,977.48/x
  3. Step 3: Cross multiply
    21,408.04x = 29,545.14 × 11,977.48
  4. Step 4: Simplify right side
    21,408.04x = 353,876,323.45
  5. Step 5: Solve for x
    x = 353,876,323.45/21,408.04
  6. Step 6: Final answer
    x = 16,530.07

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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.