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Finding the Fourth Proportional to 17,905.30, 26,857.95 and 10,129.30

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Solution

The fourth proportional to 17,905.30, 26,857.95 and 10,129.30 is: 15,193.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,905.30 : 26,857.95 = 10,129.30 : x
  2. Step 2: Convert to fraction form
    17,905.30/26,857.95 = 10,129.30/x
  3. Step 3: Cross multiply
    17,905.30x = 26,857.95 × 10,129.30
  4. Step 4: Simplify right side
    17,905.30x = 272,052,232.94
  5. Step 5: Solve for x
    x = 272,052,232.94/17,905.30
  6. Step 6: Final answer
    x = 15,193.95

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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.