Home / 21,197.83-31,827.95-11,856.15

Finding the Fourth Proportional to 21,197.83, 31,827.95 and 11,856.15

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Solution

The fourth proportional to 21,197.83, 31,827.95 and 11,856.15 is: 17,801.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,197.83 : 31,827.95 = 11,856.15 : x
  2. Step 2: Convert to fraction form
    21,197.83/31,827.95 = 11,856.15/x
  3. Step 3: Cross multiply
    21,197.83x = 31,827.95 × 11,856.15
  4. Step 4: Simplify right side
    21,197.83x = 377,356,949.39
  5. Step 5: Solve for x
    x = 377,356,949.39/21,197.83
  6. Step 6: Final answer
    x = 17,801.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.