Home / 20,713.36-28,581.92-12,214.96

Finding the Fourth Proportional to 20,713.36, 28,581.92 and 12,214.96

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Solution

The fourth proportional to 20,713.36, 28,581.92 and 12,214.96 is: 16,855.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,713.36 : 28,581.92 = 12,214.96 : x
  2. Step 2: Convert to fraction form
    20,713.36/28,581.92 = 12,214.96/x
  3. Step 3: Cross multiply
    20,713.36x = 28,581.92 × 12,214.96
  4. Step 4: Simplify right side
    20,713.36x = 349,127,009.52
  5. Step 5: Solve for x
    x = 349,127,009.52/20,713.36
  6. Step 6: Final answer
    x = 16,855.16

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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.