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Finding the Fourth Proportional to 19,773.93, 27,287.88 and 10,821.36

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Solution

The fourth proportional to 19,773.93, 27,287.88 and 10,821.36 is: 14,933.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,773.93 : 27,287.88 = 10,821.36 : x
  2. Step 2: Convert to fraction form
    19,773.93/27,287.88 = 10,821.36/x
  3. Step 3: Cross multiply
    19,773.93x = 27,287.88 × 10,821.36
  4. Step 4: Simplify right side
    19,773.93x = 295,291,973.12
  5. Step 5: Solve for x
    x = 295,291,973.12/19,773.93
  6. Step 6: Final answer
    x = 14,933.40

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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.