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Finding the Fourth Proportional to 15,527.17, 21,426.92 and 8,453.41

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Solution

The fourth proportional to 15,527.17, 21,426.92 and 8,453.41 is: 11,665.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,527.17 : 21,426.92 = 8,453.41 : x
  2. Step 2: Convert to fraction form
    15,527.17/21,426.92 = 8,453.41/x
  3. Step 3: Cross multiply
    15,527.17x = 21,426.92 × 8,453.41
  4. Step 4: Simplify right side
    15,527.17x = 181,130,497.53
  5. Step 5: Solve for x
    x = 181,130,497.53/15,527.17
  6. Step 6: Final answer
    x = 11,665.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.