Home / 12,332.80-17,015.70-7,618.60

Finding the Fourth Proportional to 12,332.80, 17,015.70 and 7,618.60

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Solution

The fourth proportional to 12,332.80, 17,015.70 and 7,618.60 is: 10,511.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,332.80 : 17,015.70 = 7,618.60 : x
  2. Step 2: Convert to fraction form
    12,332.80/17,015.70 = 7,618.60/x
  3. Step 3: Cross multiply
    12,332.80x = 17,015.70 × 7,618.60
  4. Step 4: Simplify right side
    12,332.80x = 129,635,812.02
  5. Step 5: Solve for x
    x = 129,635,812.02/12,332.80
  6. Step 6: Final answer
    x = 10,511.47

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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.