Home / 20,809.80-31,054.51-16,630.20

Finding the Fourth Proportional to 20,809.80, 31,054.51 and 16,630.20

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Solution

The fourth proportional to 20,809.80, 31,054.51 and 16,630.20 is: 24,817.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,809.80 : 31,054.51 = 16,630.20 : x
  2. Step 2: Convert to fraction form
    20,809.80/31,054.51 = 16,630.20/x
  3. Step 3: Cross multiply
    20,809.80x = 31,054.51 × 16,630.20
  4. Step 4: Simplify right side
    20,809.80x = 516,442,712.20
  5. Step 5: Solve for x
    x = 516,442,712.20/20,809.80
  6. Step 6: Final answer
    x = 24,817.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.