Home / 8,220.48-12,303.72-7,432.80

Finding the Fourth Proportional to 8,220.48, 12,303.72 and 7,432.80

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Solution

The fourth proportional to 8,220.48, 12,303.72 and 7,432.80 is: 11,124.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,220.48 : 12,303.72 = 7,432.80 : x
  2. Step 2: Convert to fraction form
    8,220.48/12,303.72 = 7,432.80/x
  3. Step 3: Cross multiply
    8,220.48x = 12,303.72 × 7,432.80
  4. Step 4: Simplify right side
    8,220.48x = 91,451,090.02
  5. Step 5: Solve for x
    x = 91,451,090.02/8,220.48
  6. Step 6: Final answer
    x = 11,124.79

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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.