Home / 18,639.28-25,722.36-10,141.42

Finding the Fourth Proportional to 18,639.28, 25,722.36 and 10,141.42

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Solution

The fourth proportional to 18,639.28, 25,722.36 and 10,141.42 is: 13,995.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,639.28 : 25,722.36 = 10,141.42 : x
  2. Step 2: Convert to fraction form
    18,639.28/25,722.36 = 10,141.42/x
  3. Step 3: Cross multiply
    18,639.28x = 25,722.36 × 10,141.42
  4. Step 4: Simplify right side
    18,639.28x = 260,861,256.15
  5. Step 5: Solve for x
    x = 260,861,256.15/18,639.28
  6. Step 6: Final answer
    x = 13,995.24

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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.