Home / 20,806.04-28,713.47-12,313.19

Finding the Fourth Proportional to 20,806.04, 28,713.47 and 12,313.19

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Solution

The fourth proportional to 20,806.04, 28,713.47 and 12,313.19 is: 16,992.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,806.04 : 28,713.47 = 12,313.19 : x
  2. Step 2: Convert to fraction form
    20,806.04/28,713.47 = 12,313.19/x
  3. Step 3: Cross multiply
    20,806.04x = 28,713.47 × 12,313.19
  4. Step 4: Simplify right side
    20,806.04x = 353,554,206.54
  5. Step 5: Solve for x
    x = 353,554,206.54/20,806.04
  6. Step 6: Final answer
    x = 16,992.87

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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.