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Finding the Fourth Proportional to 15,814.09, 21,823.46 and 8,740.51

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Solution

The fourth proportional to 15,814.09, 21,823.46 and 8,740.51 is: 12,061.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,814.09 : 21,823.46 = 8,740.51 : x
  2. Step 2: Convert to fraction form
    15,814.09/21,823.46 = 8,740.51/x
  3. Step 3: Cross multiply
    15,814.09x = 21,823.46 × 8,740.51
  4. Step 4: Simplify right side
    15,814.09x = 190,748,170.36
  5. Step 5: Solve for x
    x = 190,748,170.36/15,814.09
  6. Step 6: Final answer
    x = 12,061.91

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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.