Home / 12,328.80-17,011.51-7,290.49

Finding the Fourth Proportional to 12,328.80, 17,011.51 and 7,290.49

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Solution

The fourth proportional to 12,328.80, 17,011.51 and 7,290.49 is: 10,059.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,328.80 : 17,011.51 = 7,290.49 : x
  2. Step 2: Convert to fraction form
    12,328.80/17,011.51 = 7,290.49/x
  3. Step 3: Cross multiply
    12,328.80x = 17,011.51 × 7,290.49
  4. Step 4: Simplify right side
    12,328.80x = 124,022,243.54
  5. Step 5: Solve for x
    x = 124,022,243.54/12,328.80
  6. Step 6: Final answer
    x = 10,059.56

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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.