Home / 12,384.86-18,575.66-3,620.66

Finding the Fourth Proportional to 12,384.86, 18,575.66 and 3,620.66

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Solution

The fourth proportional to 12,384.86, 18,575.66 and 3,620.66 is: 5,430.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,384.86 : 18,575.66 = 3,620.66 : x
  2. Step 2: Convert to fraction form
    12,384.86/18,575.66 = 3,620.66/x
  3. Step 3: Cross multiply
    12,384.86x = 18,575.66 × 3,620.66
  4. Step 4: Simplify right side
    12,384.86x = 67,256,065.31
  5. Step 5: Solve for x
    x = 67,256,065.31/12,384.86
  6. Step 6: Final answer
    x = 5,430.51

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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.