Home / 20,709.91-31,038.94-16,309.99

Finding the Fourth Proportional to 20,709.91, 31,038.94 and 16,309.99

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Solution

The fourth proportional to 20,709.91, 31,038.94 and 16,309.99 is: 24,444.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,709.91 : 31,038.94 = 16,309.99 : x
  2. Step 2: Convert to fraction form
    20,709.91/31,038.94 = 16,309.99/x
  3. Step 3: Cross multiply
    20,709.91x = 31,038.94 × 16,309.99
  4. Step 4: Simplify right side
    20,709.91x = 506,244,801.01
  5. Step 5: Solve for x
    x = 506,244,801.01/20,709.91
  6. Step 6: Final answer
    x = 24,444.57

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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.