Home / 10,489.86-15,730.19-5,558.37

Finding the Fourth Proportional to 10,489.86, 15,730.19 and 5,558.37

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Solution

The fourth proportional to 10,489.86, 15,730.19 and 5,558.37 is: 8,335.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,489.86 : 15,730.19 = 5,558.37 : x
  2. Step 2: Convert to fraction form
    10,489.86/15,730.19 = 5,558.37/x
  3. Step 3: Cross multiply
    10,489.86x = 15,730.19 × 5,558.37
  4. Step 4: Simplify right side
    10,489.86x = 87,434,188.40
  5. Step 5: Solve for x
    x = 87,434,188.40/10,489.86
  6. Step 6: Final answer
    x = 8,335.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.