Home / 20,721.15-28,601.37-14,770.08

Finding the Fourth Proportional to 20,721.15, 28,601.37 and 14,770.08

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Solution

The fourth proportional to 20,721.15, 28,601.37 and 14,770.08 is: 20,387.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,721.15 : 28,601.37 = 14,770.08 : x
  2. Step 2: Convert to fraction form
    20,721.15/28,601.37 = 14,770.08/x
  3. Step 3: Cross multiply
    20,721.15x = 28,601.37 × 14,770.08
  4. Step 4: Simplify right side
    20,721.15x = 422,444,523.01
  5. Step 5: Solve for x
    x = 422,444,523.01/20,721.15
  6. Step 6: Final answer
    x = 20,387.12

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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.