Home / 12,423.21-17,144.61-7,118.01

Finding the Fourth Proportional to 12,423.21, 17,144.61 and 7,118.01

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Solution

The fourth proportional to 12,423.21, 17,144.61 and 7,118.01 is: 9,823.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,423.21 : 17,144.61 = 7,118.01 : x
  2. Step 2: Convert to fraction form
    12,423.21/17,144.61 = 7,118.01/x
  3. Step 3: Cross multiply
    12,423.21x = 17,144.61 × 7,118.01
  4. Step 4: Simplify right side
    12,423.21x = 122,035,505.43
  5. Step 5: Solve for x
    x = 122,035,505.43/12,423.21
  6. Step 6: Final answer
    x = 9,823.19

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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.