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Finding the Fourth Proportional to 19,753.20, 27,246.06 and 12,688.20

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Solution

The fourth proportional to 19,753.20, 27,246.06 and 12,688.20 is: 17,501.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,753.20 : 27,246.06 = 12,688.20 : x
  2. Step 2: Convert to fraction form
    19,753.20/27,246.06 = 12,688.20/x
  3. Step 3: Cross multiply
    19,753.20x = 27,246.06 × 12,688.20
  4. Step 4: Simplify right side
    19,753.20x = 345,703,458.49
  5. Step 5: Solve for x
    x = 345,703,458.49/19,753.20
  6. Step 6: Final answer
    x = 17,501.14

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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.