Home / 21,932.61-30,267.21-12,501.78

Finding the Fourth Proportional to 21,932.61, 30,267.21 and 12,501.78

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Solution

The fourth proportional to 21,932.61, 30,267.21 and 12,501.78 is: 17,252.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,932.61 : 30,267.21 = 12,501.78 : x
  2. Step 2: Convert to fraction form
    21,932.61/30,267.21 = 12,501.78/x
  3. Step 3: Cross multiply
    21,932.61x = 30,267.21 × 12,501.78
  4. Step 4: Simplify right side
    21,932.61x = 378,394,000.63
  5. Step 5: Solve for x
    x = 378,394,000.63/21,932.61
  6. Step 6: Final answer
    x = 17,252.58

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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.