Home / 12,665.71-18,998.95-4,345.61

Finding the Fourth Proportional to 12,665.71, 18,998.95 and 4,345.61

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Solution

The fourth proportional to 12,665.71, 18,998.95 and 4,345.61 is: 6,518.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,665.71 : 18,998.95 = 4,345.61 : x
  2. Step 2: Convert to fraction form
    12,665.71/18,998.95 = 4,345.61/x
  3. Step 3: Cross multiply
    12,665.71x = 18,998.95 × 4,345.61
  4. Step 4: Simplify right side
    12,665.71x = 82,562,037.97
  5. Step 5: Solve for x
    x = 82,562,037.97/12,665.71
  6. Step 6: Final answer
    x = 6,518.55

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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.