Home / 21,450.16-29,601.12-13,066.66

Finding the Fourth Proportional to 21,450.16, 29,601.12 and 13,066.66

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Solution

The fourth proportional to 21,450.16, 29,601.12 and 13,066.66 is: 18,031.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,450.16 : 29,601.12 = 13,066.66 : x
  2. Step 2: Convert to fraction form
    21,450.16/29,601.12 = 13,066.66/x
  3. Step 3: Cross multiply
    21,450.16x = 29,601.12 × 13,066.66
  4. Step 4: Simplify right side
    21,450.16x = 386,787,770.66
  5. Step 5: Solve for x
    x = 386,787,770.66/21,450.16
  6. Step 6: Final answer
    x = 18,031.93

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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.