Home / 13,165.74-18,168.39-7,197.21

Finding the Fourth Proportional to 13,165.74, 18,168.39 and 7,197.21

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Solution

The fourth proportional to 13,165.74, 18,168.39 and 7,197.21 is: 9,931.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,165.74 : 18,168.39 = 7,197.21 : x
  2. Step 2: Convert to fraction form
    13,165.74/18,168.39 = 7,197.21/x
  3. Step 3: Cross multiply
    13,165.74x = 18,168.39 × 7,197.21
  4. Step 4: Simplify right side
    13,165.74x = 130,761,718.19
  5. Step 5: Solve for x
    x = 130,761,718.19/13,165.74
  6. Step 6: Final answer
    x = 9,931.97

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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.