Home / 13,726.91-20,574.30-12,169.89

Finding the Fourth Proportional to 13,726.91, 20,574.30 and 12,169.89

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Solution

The fourth proportional to 13,726.91, 20,574.30 and 12,169.89 is: 18,240.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,726.91 : 20,574.30 = 12,169.89 : x
  2. Step 2: Convert to fraction form
    13,726.91/20,574.30 = 12,169.89/x
  3. Step 3: Cross multiply
    13,726.91x = 20,574.30 × 12,169.89
  4. Step 4: Simplify right side
    13,726.91x = 250,386,967.83
  5. Step 5: Solve for x
    x = 250,386,967.83/13,726.91
  6. Step 6: Final answer
    x = 18,240.59

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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.