Home / 21,112.48-29,108.76-13,545.46

Finding the Fourth Proportional to 21,112.48, 29,108.76 and 13,545.46

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Solution

The fourth proportional to 21,112.48, 29,108.76 and 13,545.46 is: 18,675.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,112.48 : 29,108.76 = 13,545.46 : x
  2. Step 2: Convert to fraction form
    21,112.48/29,108.76 = 13,545.46/x
  3. Step 3: Cross multiply
    21,112.48x = 29,108.76 × 13,545.46
  4. Step 4: Simplify right side
    21,112.48x = 394,291,544.23
  5. Step 5: Solve for x
    x = 394,291,544.23/21,112.48
  6. Step 6: Final answer
    x = 18,675.76

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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.