Home / 15,558.56-21,471.68-8,484.80

Finding the Fourth Proportional to 15,558.56, 21,471.68 and 8,484.80

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Solution

The fourth proportional to 15,558.56, 21,471.68 and 8,484.80 is: 11,709.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,558.56 : 21,471.68 = 8,484.80 : x
  2. Step 2: Convert to fraction form
    15,558.56/21,471.68 = 8,484.80/x
  3. Step 3: Cross multiply
    15,558.56x = 21,471.68 × 8,484.80
  4. Step 4: Simplify right side
    15,558.56x = 182,182,910.46
  5. Step 5: Solve for x
    x = 182,182,910.46/15,558.56
  6. Step 6: Final answer
    x = 11,709.50

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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.