Home / 29,309.05-40,446.42-15,880.66

Finding the Fourth Proportional to 29,309.05, 40,446.42 and 15,880.66

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Solution

The fourth proportional to 29,309.05, 40,446.42 and 15,880.66 is: 21,915.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,309.05 : 40,446.42 = 15,880.66 : x
  2. Step 2: Convert to fraction form
    29,309.05/40,446.42 = 15,880.66/x
  3. Step 3: Cross multiply
    29,309.05x = 40,446.42 × 15,880.66
  4. Step 4: Simplify right side
    29,309.05x = 642,315,844.24
  5. Step 5: Solve for x
    x = 642,315,844.24/29,309.05
  6. Step 6: Final answer
    x = 21,915.27

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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.