Home / 31,789.80-47,619.90-16,216.20

Finding the Fourth Proportional to 31,789.80, 47,619.90 and 16,216.20

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Solution

The fourth proportional to 31,789.80, 47,619.90 and 16,216.20 is: 24,291.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,789.80 : 47,619.90 = 16,216.20 : x
  2. Step 2: Convert to fraction form
    31,789.80/47,619.90 = 16,216.20/x
  3. Step 3: Cross multiply
    31,789.80x = 47,619.90 × 16,216.20
  4. Step 4: Simplify right side
    31,789.80x = 772,213,822.38
  5. Step 5: Solve for x
    x = 772,213,822.38/31,789.80
  6. Step 6: Final answer
    x = 24,291.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.