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Finding the Fourth Proportional to 35,812.32, 53,718.48 and 13,620.57

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Solution

The fourth proportional to 35,812.32, 53,718.48 and 13,620.57 is: 20,430.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,812.32 : 53,718.48 = 13,620.57 : x
  2. Step 2: Convert to fraction form
    35,812.32/53,718.48 = 13,620.57/x
  3. Step 3: Cross multiply
    35,812.32x = 53,718.48 × 13,620.57
  4. Step 4: Simplify right side
    35,812.32x = 731,676,317.13
  5. Step 5: Solve for x
    x = 731,676,317.13/35,812.32
  6. Step 6: Final answer
    x = 20,430.86

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.