Home / 20,376.24-28,125.09-13,205.91

Finding the Fourth Proportional to 20,376.24, 28,125.09 and 13,205.91

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Solution

The fourth proportional to 20,376.24, 28,125.09 and 13,205.91 is: 18,227.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,376.24 : 28,125.09 = 13,205.91 : x
  2. Step 2: Convert to fraction form
    20,376.24/28,125.09 = 13,205.91/x
  3. Step 3: Cross multiply
    20,376.24x = 28,125.09 × 13,205.91
  4. Step 4: Simplify right side
    20,376.24x = 371,417,407.28
  5. Step 5: Solve for x
    x = 371,417,407.28/20,376.24
  6. Step 6: Final answer
    x = 18,227.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.