Home / 20,904.16-28,848.24-11,472.64

Finding the Fourth Proportional to 20,904.16, 28,848.24 and 11,472.64

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Solution

The fourth proportional to 20,904.16, 28,848.24 and 11,472.64 is: 15,832.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.16 : 28,848.24 = 11,472.64 : x
  2. Step 2: Convert to fraction form
    20,904.16/28,848.24 = 11,472.64/x
  3. Step 3: Cross multiply
    20,904.16x = 28,848.24 × 11,472.64
  4. Step 4: Simplify right side
    20,904.16x = 330,965,472.15
  5. Step 5: Solve for x
    x = 330,965,472.15/20,904.16
  6. Step 6: Final answer
    x = 15,832.52

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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.