Home / 11,386.20-17,111.70-9,960.60

Finding the Fourth Proportional to 11,386.20, 17,111.70 and 9,960.60

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Solution

The fourth proportional to 11,386.20, 17,111.70 and 9,960.60 is: 14,969.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,386.20 : 17,111.70 = 9,960.60 : x
  2. Step 2: Convert to fraction form
    11,386.20/17,111.70 = 9,960.60/x
  3. Step 3: Cross multiply
    11,386.20x = 17,111.70 × 9,960.60
  4. Step 4: Simplify right side
    11,386.20x = 170,442,799.02
  5. Step 5: Solve for x
    x = 170,442,799.02/11,386.20
  6. Step 6: Final answer
    x = 14,969.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.