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Finding the Fourth Proportional to 21,840.32, 32,773.18 and 9,189.16

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Solution

The fourth proportional to 21,840.32, 32,773.18 and 9,189.16 is: 13,789.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,840.32 : 32,773.18 = 9,189.16 : x
  2. Step 2: Convert to fraction form
    21,840.32/32,773.18 = 9,189.16/x
  3. Step 3: Cross multiply
    21,840.32x = 32,773.18 × 9,189.16
  4. Step 4: Simplify right side
    21,840.32x = 301,157,994.73
  5. Step 5: Solve for x
    x = 301,157,994.73/21,840.32
  6. Step 6: Final answer
    x = 13,789.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.