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Finding the Fourth Proportional to 21,888.64, 32,837.30 and 7,844.90

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Solution

The fourth proportional to 21,888.64, 32,837.30 and 7,844.90 is: 11,768.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,888.64 : 32,837.30 = 7,844.90 : x
  2. Step 2: Convert to fraction form
    21,888.64/32,837.30 = 7,844.90/x
  3. Step 3: Cross multiply
    21,888.64x = 32,837.30 × 7,844.90
  4. Step 4: Simplify right side
    21,888.64x = 257,605,334.77
  5. Step 5: Solve for x
    x = 257,605,334.77/21,888.64
  6. Step 6: Final answer
    x = 11,768.91

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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.