Home / 15,285.07-21,105.86-12,452.91

Finding the Fourth Proportional to 15,285.07, 21,105.86 and 12,452.91

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Solution

The fourth proportional to 15,285.07, 21,105.86 and 12,452.91 is: 17,195.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,285.07 : 21,105.86 = 12,452.91 : x
  2. Step 2: Convert to fraction form
    15,285.07/21,105.86 = 12,452.91/x
  3. Step 3: Cross multiply
    15,285.07x = 21,105.86 × 12,452.91
  4. Step 4: Simplify right side
    15,285.07x = 262,829,375.05
  5. Step 5: Solve for x
    x = 262,829,375.05/15,285.07
  6. Step 6: Final answer
    x = 17,195.17

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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.