Home / 15,540.17-21,438.07-10,506.12

Finding the Fourth Proportional to 15,540.17, 21,438.07 and 10,506.12

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Solution

The fourth proportional to 15,540.17, 21,438.07 and 10,506.12 is: 14,493.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,540.17 : 21,438.07 = 10,506.12 : x
  2. Step 2: Convert to fraction form
    15,540.17/21,438.07 = 10,506.12/x
  3. Step 3: Cross multiply
    15,540.17x = 21,438.07 × 10,506.12
  4. Step 4: Simplify right side
    15,540.17x = 225,230,949.92
  5. Step 5: Solve for x
    x = 225,230,949.92/15,540.17
  6. Step 6: Final answer
    x = 14,493.47

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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.