Home / 12,305.20-18,457.84-4,911.52

Finding the Fourth Proportional to 12,305.20, 18,457.84 and 4,911.52

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Solution

The fourth proportional to 12,305.20, 18,457.84 and 4,911.52 is: 7,367.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,305.20 : 18,457.84 = 4,911.52 : x
  2. Step 2: Convert to fraction form
    12,305.20/18,457.84 = 4,911.52/x
  3. Step 3: Cross multiply
    12,305.20x = 18,457.84 × 4,911.52
  4. Step 4: Simplify right side
    12,305.20x = 90,656,050.32
  5. Step 5: Solve for x
    x = 90,656,050.32/12,305.20
  6. Step 6: Final answer
    x = 7,367.30

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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.