Home / 20,722.74-28,563.23-14,665.15

Finding the Fourth Proportional to 20,722.74, 28,563.23 and 14,665.15

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Solution

The fourth proportional to 20,722.74, 28,563.23 and 14,665.15 is: 20,213.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.74 : 28,563.23 = 14,665.15 : x
  2. Step 2: Convert to fraction form
    20,722.74/28,563.23 = 14,665.15/x
  3. Step 3: Cross multiply
    20,722.74x = 28,563.23 × 14,665.15
  4. Step 4: Simplify right side
    20,722.74x = 418,884,124.80
  5. Step 5: Solve for x
    x = 418,884,124.80/20,722.74
  6. Step 6: Final answer
    x = 20,213.75

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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.