Home / 20,904.24-28,848.32-11,472.80

Finding the Fourth Proportional to 20,904.24, 28,848.32 and 11,472.80

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Solution

The fourth proportional to 20,904.24, 28,848.32 and 11,472.80 is: 15,832.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.24 : 28,848.32 = 11,472.80 : x
  2. Step 2: Convert to fraction form
    20,904.24/28,848.32 = 11,472.80/x
  3. Step 3: Cross multiply
    20,904.24x = 28,848.32 × 11,472.80
  4. Step 4: Simplify right side
    20,904.24x = 330,971,005.70
  5. Step 5: Solve for x
    x = 330,971,005.70/20,904.24
  6. Step 6: Final answer
    x = 15,832.72

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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.