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Finding the Fourth Proportional to 21,777.22, 32,666.01 and 6,986.16

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Solution

The fourth proportional to 21,777.22, 32,666.01 and 6,986.16 is: 10,479.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,777.22 : 32,666.01 = 6,986.16 : x
  2. Step 2: Convert to fraction form
    21,777.22/32,666.01 = 6,986.16/x
  3. Step 3: Cross multiply
    21,777.22x = 32,666.01 × 6,986.16
  4. Step 4: Simplify right side
    21,777.22x = 228,209,972.42
  5. Step 5: Solve for x
    x = 228,209,972.42/21,777.22
  6. Step 6: Final answer
    x = 10,479.30

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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.