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Finding the Fourth Proportional to 12,969.84, 17,897.34 and 7,663.66

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Solution

The fourth proportional to 12,969.84, 17,897.34 and 7,663.66 is: 10,575.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,969.84 : 17,897.34 = 7,663.66 : x
  2. Step 2: Convert to fraction form
    12,969.84/17,897.34 = 7,663.66/x
  3. Step 3: Cross multiply
    12,969.84x = 17,897.34 × 7,663.66
  4. Step 4: Simplify right side
    12,969.84x = 137,159,128.66
  5. Step 5: Solve for x
    x = 137,159,128.66/12,969.84
  6. Step 6: Final answer
    x = 10,575.24

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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.