Home / 15,665.02-21,617.75-8,591.49

Finding the Fourth Proportional to 15,665.02, 21,617.75 and 8,591.49

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Solution

The fourth proportional to 15,665.02, 21,617.75 and 8,591.49 is: 11,856.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,665.02 : 21,617.75 = 8,591.49 : x
  2. Step 2: Convert to fraction form
    15,665.02/21,617.75 = 8,591.49/x
  3. Step 3: Cross multiply
    15,665.02x = 21,617.75 × 8,591.49
  4. Step 4: Simplify right side
    15,665.02x = 185,728,704.43
  5. Step 5: Solve for x
    x = 185,728,704.43/15,665.02
  6. Step 6: Final answer
    x = 11,856.27

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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.