Home / 13,932.45-19,231.16-9,401.72

Finding the Fourth Proportional to 13,932.45, 19,231.16 and 9,401.72

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Solution

The fourth proportional to 13,932.45, 19,231.16 and 9,401.72 is: 12,977.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,932.45 : 19,231.16 = 9,401.72 : x
  2. Step 2: Convert to fraction form
    13,932.45/19,231.16 = 9,401.72/x
  3. Step 3: Cross multiply
    13,932.45x = 19,231.16 × 9,401.72
  4. Step 4: Simplify right side
    13,932.45x = 180,805,838.43
  5. Step 5: Solve for x
    x = 180,805,838.43/13,932.45
  6. Step 6: Final answer
    x = 12,977.32

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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.