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Finding the Fourth Proportional to 12,901.97, 17,803.45 and 7,235.39

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Solution

The fourth proportional to 12,901.97, 17,803.45 and 7,235.39 is: 9,984.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,901.97 : 17,803.45 = 7,235.39 : x
  2. Step 2: Convert to fraction form
    12,901.97/17,803.45 = 7,235.39/x
  3. Step 3: Cross multiply
    12,901.97x = 17,803.45 × 7,235.39
  4. Step 4: Simplify right side
    12,901.97x = 128,814,904.10
  5. Step 5: Solve for x
    x = 128,814,904.10/12,901.97
  6. Step 6: Final answer
    x = 9,984.13

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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.