Home / 20,701.90-28,572.34-12,203.52

Finding the Fourth Proportional to 20,701.90, 28,572.34 and 12,203.52

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Solution

The fourth proportional to 20,701.90, 28,572.34 and 12,203.52 is: 16,843.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701.90 : 28,572.34 = 12,203.52 : x
  2. Step 2: Convert to fraction form
    20,701.90/28,572.34 = 12,203.52/x
  3. Step 3: Cross multiply
    20,701.90x = 28,572.34 × 12,203.52
  4. Step 4: Simplify right side
    20,701.90x = 348,683,122.64
  5. Step 5: Solve for x
    x = 348,683,122.64/20,701.90
  6. Step 6: Final answer
    x = 16,843.05

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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.