Home / 20,703.63-28,567.11-12,208.42

Finding the Fourth Proportional to 20,703.63, 28,567.11 and 12,208.42

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Solution

The fourth proportional to 20,703.63, 28,567.11 and 12,208.42 is: 16,845.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,703.63 : 28,567.11 = 12,208.42 : x
  2. Step 2: Convert to fraction form
    20,703.63/28,567.11 = 12,208.42/x
  3. Step 3: Cross multiply
    20,703.63x = 28,567.11 × 12,208.42
  4. Step 4: Simplify right side
    20,703.63x = 348,759,358.56
  5. Step 5: Solve for x
    x = 348,759,358.56/20,703.63
  6. Step 6: Final answer
    x = 16,845.32

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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.