Home / 21,282.18-29,371.45-11,850.74

Finding the Fourth Proportional to 21,282.18, 29,371.45 and 11,850.74

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Solution

The fourth proportional to 21,282.18, 29,371.45 and 11,850.74 is: 16,355.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,282.18 : 29,371.45 = 11,850.74 : x
  2. Step 2: Convert to fraction form
    21,282.18/29,371.45 = 11,850.74/x
  3. Step 3: Cross multiply
    21,282.18x = 29,371.45 × 11,850.74
  4. Step 4: Simplify right side
    21,282.18x = 348,073,417.37
  5. Step 5: Solve for x
    x = 348,073,417.37/21,282.18
  6. Step 6: Final answer
    x = 16,355.16

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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.