Home / 20,959.03-31,438.63-19,907.91

Finding the Fourth Proportional to 20,959.03, 31,438.63 and 19,907.91

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Solution

The fourth proportional to 20,959.03, 31,438.63 and 19,907.91 is: 29,861.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,959.03 : 31,438.63 = 19,907.91 : x
  2. Step 2: Convert to fraction form
    20,959.03/31,438.63 = 19,907.91/x
  3. Step 3: Cross multiply
    20,959.03x = 31,438.63 × 19,907.91
  4. Step 4: Simplify right side
    20,959.03x = 625,877,441.45
  5. Step 5: Solve for x
    x = 625,877,441.45/20,959.03
  6. Step 6: Final answer
    x = 29,861.95

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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.