Home / 21,930.01-30,263.40-11,858.43

Finding the Fourth Proportional to 21,930.01, 30,263.40 and 11,858.43

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Solution

The fourth proportional to 21,930.01, 30,263.40 and 11,858.43 is: 16,364.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,930.01 : 30,263.40 = 11,858.43 : x
  2. Step 2: Convert to fraction form
    21,930.01/30,263.40 = 11,858.43/x
  3. Step 3: Cross multiply
    21,930.01x = 30,263.40 × 11,858.43
  4. Step 4: Simplify right side
    21,930.01x = 358,876,348.74
  5. Step 5: Solve for x
    x = 358,876,348.74/21,930.01
  6. Step 6: Final answer
    x = 16,364.62

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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.