Home / 20,906.08-28,848.48-11,953.30

Finding the Fourth Proportional to 20,906.08, 28,848.48 and 11,953.30

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Solution

The fourth proportional to 20,906.08, 28,848.48 and 11,953.30 is: 16,494.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,906.08 : 28,848.48 = 11,953.30 : x
  2. Step 2: Convert to fraction form
    20,906.08/28,848.48 = 11,953.30/x
  3. Step 3: Cross multiply
    20,906.08x = 28,848.48 × 11,953.30
  4. Step 4: Simplify right side
    20,906.08x = 344,834,535.98
  5. Step 5: Solve for x
    x = 344,834,535.98/20,906.08
  6. Step 6: Final answer
    x = 16,494.46

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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.