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Finding the Fourth Proportional to 21,588.50, 29,792.22 and 12,157.22

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Solution

The fourth proportional to 21,588.50, 29,792.22 and 12,157.22 is: 16,777.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,588.50 : 29,792.22 = 12,157.22 : x
  2. Step 2: Convert to fraction form
    21,588.50/29,792.22 = 12,157.22/x
  3. Step 3: Cross multiply
    21,588.50x = 29,792.22 × 12,157.22
  4. Step 4: Simplify right side
    21,588.50x = 362,190,572.83
  5. Step 5: Solve for x
    x = 362,190,572.83/21,588.50
  6. Step 6: Final answer
    x = 16,777.01

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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.