Home / 15,558.11-21,471.99-8,659.98

Finding the Fourth Proportional to 15,558.11, 21,471.99 and 8,659.98

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Solution

The fourth proportional to 15,558.11, 21,471.99 and 8,659.98 is: 11,951.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,558.11 : 21,471.99 = 8,659.98 : x
  2. Step 2: Convert to fraction form
    15,558.11/21,471.99 = 8,659.98/x
  3. Step 3: Cross multiply
    15,558.11x = 21,471.99 × 8,659.98
  4. Step 4: Simplify right side
    15,558.11x = 185,946,971.49
  5. Step 5: Solve for x
    x = 185,946,971.49/15,558.11
  6. Step 6: Final answer
    x = 11,951.77

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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.