Home / 29,309.55-40,447.37-15,880.91

Finding the Fourth Proportional to 29,309.55, 40,447.37 and 15,880.91

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Solution

The fourth proportional to 29,309.55, 40,447.37 and 15,880.91 is: 21,915.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,309.55 : 40,447.37 = 15,880.91 : x
  2. Step 2: Convert to fraction form
    29,309.55/40,447.37 = 15,880.91/x
  3. Step 3: Cross multiply
    29,309.55x = 40,447.37 × 15,880.91
  4. Step 4: Simplify right side
    29,309.55x = 642,340,790.84
  5. Step 5: Solve for x
    x = 642,340,790.84/29,309.55
  6. Step 6: Final answer
    x = 21,915.75

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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.