Home / 12,679.48-19,005.56-5,281.96

Finding the Fourth Proportional to 12,679.48, 19,005.56 and 5,281.96

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Solution

The fourth proportional to 12,679.48, 19,005.56 and 5,281.96 is: 7,917.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,679.48 : 19,005.56 = 5,281.96 : x
  2. Step 2: Convert to fraction form
    12,679.48/19,005.56 = 5,281.96/x
  3. Step 3: Cross multiply
    12,679.48x = 19,005.56 × 5,281.96
  4. Step 4: Simplify right side
    12,679.48x = 100,386,607.70
  5. Step 5: Solve for x
    x = 100,386,607.70/12,679.48
  6. Step 6: Final answer
    x = 7,917.25

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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.