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Finding the Fourth Proportional to 19,703.52, 27,190.62 and 11,320.02

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Solution

The fourth proportional to 19,703.52, 27,190.62 and 11,320.02 is: 15,621.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,703.52 : 27,190.62 = 11,320.02 : x
  2. Step 2: Convert to fraction form
    19,703.52/27,190.62 = 11,320.02/x
  3. Step 3: Cross multiply
    19,703.52x = 27,190.62 × 11,320.02
  4. Step 4: Simplify right side
    19,703.52x = 307,798,362.21
  5. Step 5: Solve for x
    x = 307,798,362.21/19,703.52
  6. Step 6: Final answer
    x = 15,621.49

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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.