Home / 21,343.16-29,450.04-11,911.70

Finding the Fourth Proportional to 21,343.16, 29,450.04 and 11,911.70

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Solution

The fourth proportional to 21,343.16, 29,450.04 and 11,911.70 is: 16,436.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,343.16 : 29,450.04 = 11,911.70 : x
  2. Step 2: Convert to fraction form
    21,343.16/29,450.04 = 11,911.70/x
  3. Step 3: Cross multiply
    21,343.16x = 29,450.04 × 11,911.70
  4. Step 4: Simplify right side
    21,343.16x = 350,800,041.47
  5. Step 5: Solve for x
    x = 350,800,041.47/21,343.16
  6. Step 6: Final answer
    x = 16,436.18

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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.