Home / 13,660.71-18,854.85-8,942.25

Finding the Fourth Proportional to 13,660.71, 18,854.85 and 8,942.25

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Solution

The fourth proportional to 13,660.71, 18,854.85 and 8,942.25 is: 12,342.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,660.71 : 18,854.85 = 8,942.25 : x
  2. Step 2: Convert to fraction form
    13,660.71/18,854.85 = 8,942.25/x
  3. Step 3: Cross multiply
    13,660.71x = 18,854.85 × 8,942.25
  4. Step 4: Simplify right side
    13,660.71x = 168,604,782.41
  5. Step 5: Solve for x
    x = 168,604,782.41/13,660.71
  6. Step 6: Final answer
    x = 12,342.31

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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.