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Finding the Fourth Proportional to 12,605.52, 18,901.98 and 7,342.26

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Solution

The fourth proportional to 12,605.52, 18,901.98 and 7,342.26 is: 11,009.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,605.52 : 18,901.98 = 7,342.26 : x
  2. Step 2: Convert to fraction form
    12,605.52/18,901.98 = 7,342.26/x
  3. Step 3: Cross multiply
    12,605.52x = 18,901.98 × 7,342.26
  4. Step 4: Simplify right side
    12,605.52x = 138,783,251.67
  5. Step 5: Solve for x
    x = 138,783,251.67/12,605.52
  6. Step 6: Final answer
    x = 11,009.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.