Home / 21,929.49-30,262.63-11,857.86

Finding the Fourth Proportional to 21,929.49, 30,262.63 and 11,857.86

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Solution

The fourth proportional to 21,929.49, 30,262.63 and 11,857.86 is: 16,363.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,929.49 : 30,262.63 = 11,857.86 : x
  2. Step 2: Convert to fraction form
    21,929.49/30,262.63 = 11,857.86/x
  3. Step 3: Cross multiply
    21,929.49x = 30,262.63 × 11,857.86
  4. Step 4: Simplify right side
    21,929.49x = 358,850,029.77
  5. Step 5: Solve for x
    x = 358,850,029.77/21,929.49
  6. Step 6: Final answer
    x = 16,363.81

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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.