Home / 15,857.45-21,883.22-9,143.05

Finding the Fourth Proportional to 15,857.45, 21,883.22 and 9,143.05

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Solution

The fourth proportional to 15,857.45, 21,883.22 and 9,143.05 is: 12,617.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,857.45 : 21,883.22 = 9,143.05 : x
  2. Step 2: Convert to fraction form
    15,857.45/21,883.22 = 9,143.05/x
  3. Step 3: Cross multiply
    15,857.45x = 21,883.22 × 9,143.05
  4. Step 4: Simplify right side
    15,857.45x = 200,079,219.49
  5. Step 5: Solve for x
    x = 200,079,219.49/15,857.45
  6. Step 6: Final answer
    x = 12,617.36

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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.