Home / 12,345.32-18,515.10-4,023.20

Finding the Fourth Proportional to 12,345.32, 18,515.10 and 4,023.20

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Solution

The fourth proportional to 12,345.32, 18,515.10 and 4,023.20 is: 6,033.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,345.32 : 18,515.10 = 4,023.20 : x
  2. Step 2: Convert to fraction form
    12,345.32/18,515.10 = 4,023.20/x
  3. Step 3: Cross multiply
    12,345.32x = 18,515.10 × 4,023.20
  4. Step 4: Simplify right side
    12,345.32x = 74,489,950.32
  5. Step 5: Solve for x
    x = 74,489,950.32/12,345.32
  6. Step 6: Final answer
    x = 6,033.86

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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.