Home / 13,746.76-18,975-8,081.41

Finding the Fourth Proportional to 13,746.76, 18,975 and 8,081.41

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Solution

The fourth proportional to 13,746.76, 18,975 and 8,081.41 is: 11,154.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,746.76 : 18,975 = 8,081.41 : x
  2. Step 2: Convert to fraction form
    13,746.76/18,975 = 8,081.41/x
  3. Step 3: Cross multiply
    13,746.76x = 18,975 × 8,081.41
  4. Step 4: Simplify right side
    13,746.76x = 153,344,754.75
  5. Step 5: Solve for x
    x = 153,344,754.75/13,746.76
  6. Step 6: Final answer
    x = 11,154.97

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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.