Home / 11,322.60-15,640.14-9,440.34

Finding the Fourth Proportional to 11,322.60, 15,640.14 and 9,440.34

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Solution

The fourth proportional to 11,322.60, 15,640.14 and 9,440.34 is: 13,040.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,322.60 : 15,640.14 = 9,440.34 : x
  2. Step 2: Convert to fraction form
    11,322.60/15,640.14 = 9,440.34/x
  3. Step 3: Cross multiply
    11,322.60x = 15,640.14 × 9,440.34
  4. Step 4: Simplify right side
    11,322.60x = 147,648,239.25
  5. Step 5: Solve for x
    x = 147,648,239.25/11,322.60
  6. Step 6: Final answer
    x = 13,040.14

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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.