Home / 9,867.40-13,617.21-5,391.43

Finding the Fourth Proportional to 9,867.40, 13,617.21 and 5,391.43

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Solution

The fourth proportional to 9,867.40, 13,617.21 and 5,391.43 is: 7,440.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,867.40 : 13,617.21 = 5,391.43 : x
  2. Step 2: Convert to fraction form
    9,867.40/13,617.21 = 5,391.43/x
  3. Step 3: Cross multiply
    9,867.40x = 13,617.21 × 5,391.43
  4. Step 4: Simplify right side
    9,867.40x = 73,416,256.59
  5. Step 5: Solve for x
    x = 73,416,256.59/9,867.40
  6. Step 6: Final answer
    x = 7,440.28

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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.