Home / 13,878.46-19,154.10-7,908.76

Finding the Fourth Proportional to 13,878.46, 19,154.10 and 7,908.76

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Solution

The fourth proportional to 13,878.46, 19,154.10 and 7,908.76 is: 10,915.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,878.46 : 19,154.10 = 7,908.76 : x
  2. Step 2: Convert to fraction form
    13,878.46/19,154.10 = 7,908.76/x
  3. Step 3: Cross multiply
    13,878.46x = 19,154.10 × 7,908.76
  4. Step 4: Simplify right side
    13,878.46x = 151,485,179.92
  5. Step 5: Solve for x
    x = 151,485,179.92/13,878.46
  6. Step 6: Final answer
    x = 10,915.13

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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.