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Finding the Fourth Proportional to 21,951, 30,292.74 and 12,524.76

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Solution

The fourth proportional to 21,951, 30,292.74 and 12,524.76 is: 17,284.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,951 : 30,292.74 = 12,524.76 : x
  2. Step 2: Convert to fraction form
    21,951/30,292.74 = 12,524.76/x
  3. Step 3: Cross multiply
    21,951x = 30,292.74 × 12,524.76
  4. Step 4: Simplify right side
    21,951x = 379,409,298.24
  5. Step 5: Solve for x
    x = 379,409,298.24/21,951
  6. Step 6: Final answer
    x = 17,284.37

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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.