Home / 11,341.20-15,651.80-7,938.60

Finding the Fourth Proportional to 11,341.20, 15,651.80 and 7,938.60

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Solution

The fourth proportional to 11,341.20, 15,651.80 and 7,938.60 is: 10,955.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,341.20 : 15,651.80 = 7,938.60 : x
  2. Step 2: Convert to fraction form
    11,341.20/15,651.80 = 7,938.60/x
  3. Step 3: Cross multiply
    11,341.20x = 15,651.80 × 7,938.60
  4. Step 4: Simplify right side
    11,341.20x = 124,253,379.48
  5. Step 5: Solve for x
    x = 124,253,379.48/11,341.20
  6. Step 6: Final answer
    x = 10,955.93

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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.