Home / 21,643.11-29,867.57-12,082.82

Finding the Fourth Proportional to 21,643.11, 29,867.57 and 12,082.82

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Solution

The fourth proportional to 21,643.11, 29,867.57 and 12,082.82 is: 16,674.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,643.11 : 29,867.57 = 12,082.82 : x
  2. Step 2: Convert to fraction form
    21,643.11/29,867.57 = 12,082.82/x
  3. Step 3: Cross multiply
    21,643.11x = 29,867.57 × 12,082.82
  4. Step 4: Simplify right side
    21,643.11x = 360,884,472.15
  5. Step 5: Solve for x
    x = 360,884,472.15/21,643.11
  6. Step 6: Final answer
    x = 16,674.34

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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.