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Finding the Fourth Proportional to 20,804.80, 31,047.06 and 16,625.20

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Solution

The fourth proportional to 20,804.80, 31,047.06 and 16,625.20 is: 24,809.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804.80 : 31,047.06 = 16,625.20 : x
  2. Step 2: Convert to fraction form
    20,804.80/31,047.06 = 16,625.20/x
  3. Step 3: Cross multiply
    20,804.80x = 31,047.06 × 16,625.20
  4. Step 4: Simplify right side
    20,804.80x = 516,163,581.91
  5. Step 5: Solve for x
    x = 516,163,581.91/20,804.80
  6. Step 6: Final answer
    x = 24,809.83

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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.