Home / 12,878.58-19,320.66-5,087.46

Finding the Fourth Proportional to 12,878.58, 19,320.66 and 5,087.46

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Solution

The fourth proportional to 12,878.58, 19,320.66 and 5,087.46 is: 7,632.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,878.58 : 19,320.66 = 5,087.46 : x
  2. Step 2: Convert to fraction form
    12,878.58/19,320.66 = 5,087.46/x
  3. Step 3: Cross multiply
    12,878.58x = 19,320.66 × 5,087.46
  4. Step 4: Simplify right side
    12,878.58x = 98,293,084.92
  5. Step 5: Solve for x
    x = 98,293,084.92/12,878.58
  6. Step 6: Final answer
    x = 7,632.29

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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.