Home / 12,678.60-19,013.91-5,281.14

Finding the Fourth Proportional to 12,678.60, 19,013.91 and 5,281.14

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Solution

The fourth proportional to 12,678.60, 19,013.91 and 5,281.14 is: 7,920.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,678.60 : 19,013.91 = 5,281.14 : x
  2. Step 2: Convert to fraction form
    12,678.60/19,013.91 = 5,281.14/x
  3. Step 3: Cross multiply
    12,678.60x = 19,013.91 × 5,281.14
  4. Step 4: Simplify right side
    12,678.60x = 100,415,120.66
  5. Step 5: Solve for x
    x = 100,415,120.66/12,678.60
  6. Step 6: Final answer
    x = 7,920.05

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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.