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Finding the Fourth Proportional to 12,812.48, 17,674.49 and 10,425.12

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Solution

The fourth proportional to 12,812.48, 17,674.49 and 10,425.12 is: 14,381.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,812.48 : 17,674.49 = 10,425.12 : x
  2. Step 2: Convert to fraction form
    12,812.48/17,674.49 = 10,425.12/x
  3. Step 3: Cross multiply
    12,812.48x = 17,674.49 × 10,425.12
  4. Step 4: Simplify right side
    12,812.48x = 184,258,679.19
  5. Step 5: Solve for x
    x = 184,258,679.19/12,812.48
  6. Step 6: Final answer
    x = 14,381.19

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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.