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Finding the Fourth Proportional to 15,891.48, 21,900.06 and 15,502.68

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Solution

The fourth proportional to 15,891.48, 21,900.06 and 15,502.68 is: 21,364.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,891.48 : 21,900.06 = 15,502.68 : x
  2. Step 2: Convert to fraction form
    15,891.48/21,900.06 = 15,502.68/x
  3. Step 3: Cross multiply
    15,891.48x = 21,900.06 × 15,502.68
  4. Step 4: Simplify right side
    15,891.48x = 339,509,622.16
  5. Step 5: Solve for x
    x = 339,509,622.16/15,891.48
  6. Step 6: Final answer
    x = 21,364.25

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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.