Home / 15,631.92-21,572.06-8,558.78

Finding the Fourth Proportional to 15,631.92, 21,572.06 and 8,558.78

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Solution

The fourth proportional to 15,631.92, 21,572.06 and 8,558.78 is: 11,811.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,631.92 : 21,572.06 = 8,558.78 : x
  2. Step 2: Convert to fraction form
    15,631.92/21,572.06 = 8,558.78/x
  3. Step 3: Cross multiply
    15,631.92x = 21,572.06 × 8,558.78
  4. Step 4: Simplify right side
    15,631.92x = 184,630,365.03
  5. Step 5: Solve for x
    x = 184,630,365.03/15,631.92
  6. Step 6: Final answer
    x = 11,811.11

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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.