Home / 21,344.14-29,455.23-11,913.42

Finding the Fourth Proportional to 21,344.14, 29,455.23 and 11,913.42

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Solution

The fourth proportional to 21,344.14, 29,455.23 and 11,913.42 is: 16,440.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,344.14 : 29,455.23 = 11,913.42 : x
  2. Step 2: Convert to fraction form
    21,344.14/29,455.23 = 11,913.42/x
  3. Step 3: Cross multiply
    21,344.14x = 29,455.23 × 11,913.42
  4. Step 4: Simplify right side
    21,344.14x = 350,912,526.19
  5. Step 5: Solve for x
    x = 350,912,526.19/21,344.14
  6. Step 6: Final answer
    x = 16,440.70

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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.