Home / 20,904.31-28,848.18-11,472.67

Finding the Fourth Proportional to 20,904.31, 28,848.18 and 11,472.67

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Solution

The fourth proportional to 20,904.31, 28,848.18 and 11,472.67 is: 15,832.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.31 : 28,848.18 = 11,472.67 : x
  2. Step 2: Convert to fraction form
    20,904.31/28,848.18 = 11,472.67/x
  3. Step 3: Cross multiply
    20,904.31x = 28,848.18 × 11,472.67
  4. Step 4: Simplify right side
    20,904.31x = 330,965,649.24
  5. Step 5: Solve for x
    x = 330,965,649.24/20,904.31
  6. Step 6: Final answer
    x = 15,832.41

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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.