Home / 20,807.80-31,051.52-16,628.20

Finding the Fourth Proportional to 20,807.80, 31,051.52 and 16,628.20

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Solution

The fourth proportional to 20,807.80, 31,051.52 and 16,628.20 is: 24,814.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,807.80 : 31,051.52 = 16,628.20 : x
  2. Step 2: Convert to fraction form
    20,807.80/31,051.52 = 16,628.20/x
  3. Step 3: Cross multiply
    20,807.80x = 31,051.52 × 16,628.20
  4. Step 4: Simplify right side
    20,807.80x = 516,330,884.86
  5. Step 5: Solve for x
    x = 516,330,884.86/20,807.80
  6. Step 6: Final answer
    x = 24,814.29

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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.