Home / 21,948.49-30,288.83-11,876.98

Finding the Fourth Proportional to 21,948.49, 30,288.83 and 11,876.98

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Solution

The fourth proportional to 21,948.49, 30,288.83 and 11,876.98 is: 16,390.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,948.49 : 30,288.83 = 11,876.98 : x
  2. Step 2: Convert to fraction form
    21,948.49/30,288.83 = 11,876.98/x
  3. Step 3: Cross multiply
    21,948.49x = 30,288.83 × 11,876.98
  4. Step 4: Simplify right side
    21,948.49x = 359,739,828.13
  5. Step 5: Solve for x
    x = 359,739,828.13/21,948.49
  6. Step 6: Final answer
    x = 16,390.19

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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.