Home / 18,934.70-26,108.34-15,521

Finding the Fourth Proportional to 18,934.70, 26,108.34 and 15,521

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Solution

The fourth proportional to 18,934.70, 26,108.34 and 15,521 is: 21,401.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,934.70 : 26,108.34 = 15,521 : x
  2. Step 2: Convert to fraction form
    18,934.70/26,108.34 = 15,521/x
  3. Step 3: Cross multiply
    18,934.70x = 26,108.34 × 15,521
  4. Step 4: Simplify right side
    18,934.70x = 405,227,545.14
  5. Step 5: Solve for x
    x = 405,227,545.14/18,934.70
  6. Step 6: Final answer
    x = 21,401.32

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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.