Home / 13,340.78-20,022.66-7,423.58

Finding the Fourth Proportional to 13,340.78, 20,022.66 and 7,423.58

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Solution

The fourth proportional to 13,340.78, 20,022.66 and 7,423.58 is: 11,141.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,340.78 : 20,022.66 = 7,423.58 : x
  2. Step 2: Convert to fraction form
    13,340.78/20,022.66 = 7,423.58/x
  3. Step 3: Cross multiply
    13,340.78x = 20,022.66 × 7,423.58
  4. Step 4: Simplify right side
    13,340.78x = 148,639,718.21
  5. Step 5: Solve for x
    x = 148,639,718.21/13,340.78
  6. Step 6: Final answer
    x = 11,141.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.