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Finding the Fourth Proportional to 12,859.48, 17,738.70 and 7,553.32

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Solution

The fourth proportional to 12,859.48, 17,738.70 and 7,553.32 is: 10,419.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,859.48 : 17,738.70 = 7,553.32 : x
  2. Step 2: Convert to fraction form
    12,859.48/17,738.70 = 7,553.32/x
  3. Step 3: Cross multiply
    12,859.48x = 17,738.70 × 7,553.32
  4. Step 4: Simplify right side
    12,859.48x = 133,986,077.48
  5. Step 5: Solve for x
    x = 133,986,077.48/12,859.48
  6. Step 6: Final answer
    x = 10,419.25

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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.