Home / 12,581.23-18,875.09-4,785.79

Finding the Fourth Proportional to 12,581.23, 18,875.09 and 4,785.79

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Solution

The fourth proportional to 12,581.23, 18,875.09 and 4,785.79 is: 7,179.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,581.23 : 18,875.09 = 4,785.79 : x
  2. Step 2: Convert to fraction form
    12,581.23/18,875.09 = 4,785.79/x
  3. Step 3: Cross multiply
    12,581.23x = 18,875.09 × 4,785.79
  4. Step 4: Simplify right side
    12,581.23x = 90,332,216.97
  5. Step 5: Solve for x
    x = 90,332,216.97/12,581.23
  6. Step 6: Final answer
    x = 7,179.92

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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.