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Finding the Fourth Proportional to 19,673.96, 27,149.34 and 10,721.31

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Solution

The fourth proportional to 19,673.96, 27,149.34 and 10,721.31 is: 14,795.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,673.96 : 27,149.34 = 10,721.31 : x
  2. Step 2: Convert to fraction form
    19,673.96/27,149.34 = 10,721.31/x
  3. Step 3: Cross multiply
    19,673.96x = 27,149.34 × 10,721.31
  4. Step 4: Simplify right side
    19,673.96x = 291,076,301.08
  5. Step 5: Solve for x
    x = 291,076,301.08/19,673.96
  6. Step 6: Final answer
    x = 14,795.01

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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.