Home / 21,951.16-30,284.94-15,235

Finding the Fourth Proportional to 21,951.16, 30,284.94 and 15,235

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Solution

The fourth proportional to 21,951.16, 30,284.94 and 15,235 is: 21,018.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,951.16 : 30,284.94 = 15,235 : x
  2. Step 2: Convert to fraction form
    21,951.16/30,284.94 = 15,235/x
  3. Step 3: Cross multiply
    21,951.16x = 30,284.94 × 15,235
  4. Step 4: Simplify right side
    21,951.16x = 461,391,060.90
  5. Step 5: Solve for x
    x = 461,391,060.90/21,951.16
  6. Step 6: Final answer
    x = 21,018.98

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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.