Home / 15,571.60-21,489.12-8,498.32

Finding the Fourth Proportional to 15,571.60, 21,489.12 and 8,498.32

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Solution

The fourth proportional to 15,571.60, 21,489.12 and 8,498.32 is: 11,727.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,571.60 : 21,489.12 = 8,498.32 : x
  2. Step 2: Convert to fraction form
    15,571.60/21,489.12 = 8,498.32/x
  3. Step 3: Cross multiply
    15,571.60x = 21,489.12 × 8,498.32
  4. Step 4: Simplify right side
    15,571.60x = 182,621,418.28
  5. Step 5: Solve for x
    x = 182,621,418.28/15,571.60
  6. Step 6: Final answer
    x = 11,727.85

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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.