Home / 20,703.52-28,577.76-12,205.36

Finding the Fourth Proportional to 20,703.52, 28,577.76 and 12,205.36

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Solution

The fourth proportional to 20,703.52, 28,577.76 and 12,205.36 is: 16,847.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,703.52 : 28,577.76 = 12,205.36 : x
  2. Step 2: Convert to fraction form
    20,703.52/28,577.76 = 12,205.36/x
  3. Step 3: Cross multiply
    20,703.52x = 28,577.76 × 12,205.36
  4. Step 4: Simplify right side
    20,703.52x = 348,801,848.79
  5. Step 5: Solve for x
    x = 348,801,848.79/20,703.52
  6. Step 6: Final answer
    x = 16,847.47

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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.