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Finding the Fourth Proportional to 15,326.16, 21,152.06 and 9,356.55

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Solution

The fourth proportional to 15,326.16, 21,152.06 and 9,356.55 is: 12,913.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,326.16 : 21,152.06 = 9,356.55 : x
  2. Step 2: Convert to fraction form
    15,326.16/21,152.06 = 9,356.55/x
  3. Step 3: Cross multiply
    15,326.16x = 21,152.06 × 9,356.55
  4. Step 4: Simplify right side
    15,326.16x = 197,910,260.21
  5. Step 5: Solve for x
    x = 197,910,260.21/15,326.16
  6. Step 6: Final answer
    x = 12,913.23

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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.