Home / 15,838.32-21,860.20-13,183.14

Finding the Fourth Proportional to 15,838.32, 21,860.20 and 13,183.14

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Solution

The fourth proportional to 15,838.32, 21,860.20 and 13,183.14 is: 18,195.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,838.32 : 21,860.20 = 13,183.14 : x
  2. Step 2: Convert to fraction form
    15,838.32/21,860.20 = 13,183.14/x
  3. Step 3: Cross multiply
    15,838.32x = 21,860.20 × 13,183.14
  4. Step 4: Simplify right side
    15,838.32x = 288,186,077.03
  5. Step 5: Solve for x
    x = 288,186,077.03/15,838.32
  6. Step 6: Final answer
    x = 18,195.50

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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.