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Finding the Fourth Proportional to 12,320.25, 17,001.95 and 6,731.25

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Solution

The fourth proportional to 12,320.25, 17,001.95 and 6,731.25 is: 9,289.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,320.25 : 17,001.95 = 6,731.25 : x
  2. Step 2: Convert to fraction form
    12,320.25/17,001.95 = 6,731.25/x
  3. Step 3: Cross multiply
    12,320.25x = 17,001.95 × 6,731.25
  4. Step 4: Simplify right side
    12,320.25x = 114,444,342.28
  5. Step 5: Solve for x
    x = 114,444,342.28/12,320.25
  6. Step 6: Final answer
    x = 9,289.13

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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.