Home / 21,929.52-30,262.61-11,857.98

Finding the Fourth Proportional to 21,929.52, 30,262.61 and 11,857.98

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Solution

The fourth proportional to 21,929.52, 30,262.61 and 11,857.98 is: 16,363.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,929.52 : 30,262.61 = 11,857.98 : x
  2. Step 2: Convert to fraction form
    21,929.52/30,262.61 = 11,857.98/x
  3. Step 3: Cross multiply
    21,929.52x = 30,262.61 × 11,857.98
  4. Step 4: Simplify right side
    21,929.52x = 358,853,364.84
  5. Step 5: Solve for x
    x = 358,853,364.84/21,929.52
  6. Step 6: Final answer
    x = 16,363.94

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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.