Home / 10,976.80-15,187.36-9,583.60

Finding the Fourth Proportional to 10,976.80, 15,187.36 and 9,583.60

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Solution

The fourth proportional to 10,976.80, 15,187.36 and 9,583.60 is: 13,259.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,976.80 : 15,187.36 = 9,583.60 : x
  2. Step 2: Convert to fraction form
    10,976.80/15,187.36 = 9,583.60/x
  3. Step 3: Cross multiply
    10,976.80x = 15,187.36 × 9,583.60
  4. Step 4: Simplify right side
    10,976.80x = 145,549,583.30
  5. Step 5: Solve for x
    x = 145,549,583.30/10,976.80
  6. Step 6: Final answer
    x = 13,259.75

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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.