Home / 12,880.48-17,775.12-7,292.56

Finding the Fourth Proportional to 12,880.48, 17,775.12 and 7,292.56

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Solution

The fourth proportional to 12,880.48, 17,775.12 and 7,292.56 is: 10,063.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,880.48 : 17,775.12 = 7,292.56 : x
  2. Step 2: Convert to fraction form
    12,880.48/17,775.12 = 7,292.56/x
  3. Step 3: Cross multiply
    12,880.48x = 17,775.12 × 7,292.56
  4. Step 4: Simplify right side
    12,880.48x = 129,626,129.11
  5. Step 5: Solve for x
    x = 129,626,129.11/12,880.48
  6. Step 6: Final answer
    x = 10,063.77

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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.