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Finding the Fourth Proportional to 22,720.67, 31,355.22 and 12,373.10

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Solution

The fourth proportional to 22,720.67, 31,355.22 and 12,373.10 is: 17,075.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,720.67 : 31,355.22 = 12,373.10 : x
  2. Step 2: Convert to fraction form
    22,720.67/31,355.22 = 12,373.10/x
  3. Step 3: Cross multiply
    22,720.67x = 31,355.22 × 12,373.10
  4. Step 4: Simplify right side
    22,720.67x = 387,961,272.58
  5. Step 5: Solve for x
    x = 387,961,272.58/22,720.67
  6. Step 6: Final answer
    x = 17,075.26

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.