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Finding the Fourth Proportional to 21,776.70, 32,637.51 and 12,422.01

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Solution

The fourth proportional to 21,776.70, 32,637.51 and 12,422.01 is: 18,617.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,776.70 : 32,637.51 = 12,422.01 : x
  2. Step 2: Convert to fraction form
    21,776.70/32,637.51 = 12,422.01/x
  3. Step 3: Cross multiply
    21,776.70x = 32,637.51 × 12,422.01
  4. Step 4: Simplify right side
    21,776.70x = 405,423,250.30
  5. Step 5: Solve for x
    x = 405,423,250.30/21,776.70
  6. Step 6: Final answer
    x = 18,617.30

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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.