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Finding the Fourth Proportional to 12,927.51, 17,838.92 and 7,261.95

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Solution

The fourth proportional to 12,927.51, 17,838.92 and 7,261.95 is: 10,020.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,927.51 : 17,838.92 = 7,261.95 : x
  2. Step 2: Convert to fraction form
    12,927.51/17,838.92 = 7,261.95/x
  3. Step 3: Cross multiply
    12,927.51x = 17,838.92 × 7,261.95
  4. Step 4: Simplify right side
    12,927.51x = 129,545,308.78
  5. Step 5: Solve for x
    x = 129,545,308.78/12,927.51
  6. Step 6: Final answer
    x = 10,020.90

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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.