Home / 13,981.68-19,293-8,316.56

Finding the Fourth Proportional to 13,981.68, 19,293 and 8,316.56

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Solution

The fourth proportional to 13,981.68, 19,293 and 8,316.56 is: 11,475.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,981.68 : 19,293 = 8,316.56 : x
  2. Step 2: Convert to fraction form
    13,981.68/19,293 = 8,316.56/x
  3. Step 3: Cross multiply
    13,981.68x = 19,293 × 8,316.56
  4. Step 4: Simplify right side
    13,981.68x = 160,451,392.08
  5. Step 5: Solve for x
    x = 160,451,392.08/13,981.68
  6. Step 6: Final answer
    x = 11,475.83

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Double scale
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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.