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Finding the Fourth Proportional to 15,674.34, 21,630.74 and 8,601.02

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Solution

The fourth proportional to 15,674.34, 21,630.74 and 8,601.02 is: 11,869.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,674.34 : 21,630.74 = 8,601.02 : x
  2. Step 2: Convert to fraction form
    15,674.34/21,630.74 = 8,601.02/x
  3. Step 3: Cross multiply
    15,674.34x = 21,630.74 × 8,601.02
  4. Step 4: Simplify right side
    15,674.34x = 186,046,427.35
  5. Step 5: Solve for x
    x = 186,046,427.35/15,674.34
  6. Step 6: Final answer
    x = 11,869.49

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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.