Home / 21,374.40-29,499.12-11,943.84

Finding the Fourth Proportional to 21,374.40, 29,499.12 and 11,943.84

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Solution

The fourth proportional to 21,374.40, 29,499.12 and 11,943.84 is: 16,483.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,374.40 : 29,499.12 = 11,943.84 : x
  2. Step 2: Convert to fraction form
    21,374.40/29,499.12 = 11,943.84/x
  3. Step 3: Cross multiply
    21,374.40x = 29,499.12 × 11,943.84
  4. Step 4: Simplify right side
    21,374.40x = 352,332,769.42
  5. Step 5: Solve for x
    x = 352,332,769.42/21,374.40
  6. Step 6: Final answer
    x = 16,483.87

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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.