Home / 10,909.35-15,056.86-6,432.83

Finding the Fourth Proportional to 10,909.35, 15,056.86 and 6,432.83

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Solution

The fourth proportional to 10,909.35, 15,056.86 and 6,432.83 is: 8,878.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,909.35 : 15,056.86 = 6,432.83 : x
  2. Step 2: Convert to fraction form
    10,909.35/15,056.86 = 6,432.83/x
  3. Step 3: Cross multiply
    10,909.35x = 15,056.86 × 6,432.83
  4. Step 4: Simplify right side
    10,909.35x = 96,858,300.66
  5. Step 5: Solve for x
    x = 96,858,300.66/10,909.35
  6. Step 6: Final answer
    x = 8,878.47

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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.