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Finding the Fourth Proportional to 15,417.95, 21,276.92 and 8,344.52

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Solution

The fourth proportional to 15,417.95, 21,276.92 and 8,344.52 is: 11,515.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,417.95 : 21,276.92 = 8,344.52 : x
  2. Step 2: Convert to fraction form
    15,417.95/21,276.92 = 8,344.52/x
  3. Step 3: Cross multiply
    15,417.95x = 21,276.92 × 8,344.52
  4. Step 4: Simplify right side
    15,417.95x = 177,545,536.37
  5. Step 5: Solve for x
    x = 177,545,536.37/15,417.95
  6. Step 6: Final answer
    x = 11,515.51

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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.