Home / 20,701.43-28,571.70-12,203.05

Finding the Fourth Proportional to 20,701.43, 28,571.70 and 12,203.05

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Solution

The fourth proportional to 20,701.43, 28,571.70 and 12,203.05 is: 16,842.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701.43 : 28,571.70 = 12,203.05 : x
  2. Step 2: Convert to fraction form
    20,701.43/28,571.70 = 12,203.05/x
  3. Step 3: Cross multiply
    20,701.43x = 28,571.70 × 12,203.05
  4. Step 4: Simplify right side
    20,701.43x = 348,661,679.81
  5. Step 5: Solve for x
    x = 348,661,679.81/20,701.43
  6. Step 6: Final answer
    x = 16,842.40

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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.