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Finding the Fourth Proportional to 12,423.46, 17,143.29 and 7,118.02

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Solution

The fourth proportional to 12,423.46, 17,143.29 and 7,118.02 is: 9,822.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,423.46 : 17,143.29 = 7,118.02 : x
  2. Step 2: Convert to fraction form
    12,423.46/17,143.29 = 7,118.02/x
  3. Step 3: Cross multiply
    12,423.46x = 17,143.29 × 7,118.02
  4. Step 4: Simplify right side
    12,423.46x = 122,026,281.09
  5. Step 5: Solve for x
    x = 122,026,281.09/12,423.46
  6. Step 6: Final answer
    x = 9,822.25

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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.