Home / 21,948.17-30,288.26-11,876.39

Finding the Fourth Proportional to 21,948.17, 30,288.26 and 11,876.39

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Solution

The fourth proportional to 21,948.17, 30,288.26 and 11,876.39 is: 16,389.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,948.17 : 30,288.26 = 11,876.39 : x
  2. Step 2: Convert to fraction form
    21,948.17/30,288.26 = 11,876.39/x
  3. Step 3: Cross multiply
    21,948.17x = 30,288.26 × 11,876.39
  4. Step 4: Simplify right side
    21,948.17x = 359,715,188.18
  5. Step 5: Solve for x
    x = 359,715,188.18/21,948.17
  6. Step 6: Final answer
    x = 16,389.30

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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.