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Finding the Fourth Proportional to 19,473.48, 26,871.48 and 11,921.94

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Solution

The fourth proportional to 19,473.48, 26,871.48 and 11,921.94 is: 16,451.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,473.48 : 26,871.48 = 11,921.94 : x
  2. Step 2: Convert to fraction form
    19,473.48/26,871.48 = 11,921.94/x
  3. Step 3: Cross multiply
    19,473.48x = 26,871.48 × 11,921.94
  4. Step 4: Simplify right side
    19,473.48x = 320,360,172.27
  5. Step 5: Solve for x
    x = 320,360,172.27/19,473.48
  6. Step 6: Final answer
    x = 16,451.10

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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.