Home / 12,345.12-18,518.54-4,449.24

Finding the Fourth Proportional to 12,345.12, 18,518.54 and 4,449.24

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Solution

The fourth proportional to 12,345.12, 18,518.54 and 4,449.24 is: 6,674.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,345.12 : 18,518.54 = 4,449.24 : x
  2. Step 2: Convert to fraction form
    12,345.12/18,518.54 = 4,449.24/x
  3. Step 3: Cross multiply
    12,345.12x = 18,518.54 × 4,449.24
  4. Step 4: Simplify right side
    12,345.12x = 82,393,406.66
  5. Step 5: Solve for x
    x = 82,393,406.66/12,345.12
  6. Step 6: Final answer
    x = 6,674.17

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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.