Home / 11,228.20-16,842.30-4,985.80

Finding the Fourth Proportional to 11,228.20, 16,842.30 and 4,985.80

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Solution

The fourth proportional to 11,228.20, 16,842.30 and 4,985.80 is: 7,478.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,228.20 : 16,842.30 = 4,985.80 : x
  2. Step 2: Convert to fraction form
    11,228.20/16,842.30 = 4,985.80/x
  3. Step 3: Cross multiply
    11,228.20x = 16,842.30 × 4,985.80
  4. Step 4: Simplify right side
    11,228.20x = 83,972,339.34
  5. Step 5: Solve for x
    x = 83,972,339.34/11,228.20
  6. Step 6: Final answer
    x = 7,478.70

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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.