Home / 12,345.43-18,520.45-4,950.47

Finding the Fourth Proportional to 12,345.43, 18,520.45 and 4,950.47

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Solution

The fourth proportional to 12,345.43, 18,520.45 and 4,950.47 is: 7,426.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,345.43 : 18,520.45 = 4,950.47 : x
  2. Step 2: Convert to fraction form
    12,345.43/18,520.45 = 4,950.47/x
  3. Step 3: Cross multiply
    12,345.43x = 18,520.45 × 4,950.47
  4. Step 4: Simplify right side
    12,345.43x = 91,684,932.11
  5. Step 5: Solve for x
    x = 91,684,932.11/12,345.43
  6. Step 6: Final answer
    x = 7,426.63

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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.