Home / 15,624.20-21,561.31-8,550.74

Finding the Fourth Proportional to 15,624.20, 21,561.31 and 8,550.74

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Solution

The fourth proportional to 15,624.20, 21,561.31 and 8,550.74 is: 11,799.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,624.20 : 21,561.31 = 8,550.74 : x
  2. Step 2: Convert to fraction form
    15,624.20/21,561.31 = 8,550.74/x
  3. Step 3: Cross multiply
    15,624.20x = 21,561.31 × 8,550.74
  4. Step 4: Simplify right side
    15,624.20x = 184,365,155.87
  5. Step 5: Solve for x
    x = 184,365,155.87/15,624.20
  6. Step 6: Final answer
    x = 11,799.97

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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.