Home / 20,501.57-28,296.77-13,423.88

Finding the Fourth Proportional to 20,501.57, 28,296.77 and 13,423.88

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Solution

The fourth proportional to 20,501.57, 28,296.77 and 13,423.88 is: 18,527.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,501.57 : 28,296.77 = 13,423.88 : x
  2. Step 2: Convert to fraction form
    20,501.57/28,296.77 = 13,423.88/x
  3. Step 3: Cross multiply
    20,501.57x = 28,296.77 × 13,423.88
  4. Step 4: Simplify right side
    20,501.57x = 379,852,236.26
  5. Step 5: Solve for x
    x = 379,852,236.26/20,501.57
  6. Step 6: Final answer
    x = 18,527.96

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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.