Home / 12,751.04-19,121.60-4,428.80

Finding the Fourth Proportional to 12,751.04, 19,121.60 and 4,428.80

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Solution

The fourth proportional to 12,751.04, 19,121.60 and 4,428.80 is: 6,641.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,751.04 : 19,121.60 = 4,428.80 : x
  2. Step 2: Convert to fraction form
    12,751.04/19,121.60 = 4,428.80/x
  3. Step 3: Cross multiply
    12,751.04x = 19,121.60 × 4,428.80
  4. Step 4: Simplify right side
    12,751.04x = 84,685,742.08
  5. Step 5: Solve for x
    x = 84,685,742.08/12,751.04
  6. Step 6: Final answer
    x = 6,641.48

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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.