Home / 15,860.72-21,887.84-9,146.82

Finding the Fourth Proportional to 15,860.72, 21,887.84 and 9,146.82

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Solution

The fourth proportional to 15,860.72, 21,887.84 and 9,146.82 is: 12,622.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,860.72 : 21,887.84 = 9,146.82 : x
  2. Step 2: Convert to fraction form
    15,860.72/21,887.84 = 9,146.82/x
  3. Step 3: Cross multiply
    15,860.72x = 21,887.84 × 9,146.82
  4. Step 4: Simplify right side
    15,860.72x = 200,204,132.67
  5. Step 5: Solve for x
    x = 200,204,132.67/15,860.72
  6. Step 6: Final answer
    x = 12,622.64

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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.