Home / 21,927.78-30,223.98-15,546.15

Finding the Fourth Proportional to 21,927.78, 30,223.98 and 15,546.15

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Solution

The fourth proportional to 21,927.78, 30,223.98 and 15,546.15 is: 21,427.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,927.78 : 30,223.98 = 15,546.15 : x
  2. Step 2: Convert to fraction form
    21,927.78/30,223.98 = 15,546.15/x
  3. Step 3: Cross multiply
    21,927.78x = 30,223.98 × 15,546.15
  4. Step 4: Simplify right side
    21,927.78x = 469,866,526.68
  5. Step 5: Solve for x
    x = 469,866,526.68/21,927.78
  6. Step 6: Final answer
    x = 21,427.91

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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.