Home / 20,810.84-31,291.20-19,187.24

Finding the Fourth Proportional to 20,810.84, 31,291.20 and 19,187.24

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Solution

The fourth proportional to 20,810.84, 31,291.20 and 19,187.24 is: 28,849.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,810.84 : 31,291.20 = 19,187.24 : x
  2. Step 2: Convert to fraction form
    20,810.84/31,291.20 = 19,187.24/x
  3. Step 3: Cross multiply
    20,810.84x = 31,291.20 × 19,187.24
  4. Step 4: Simplify right side
    20,810.84x = 600,391,764.29
  5. Step 5: Solve for x
    x = 600,391,764.29/20,810.84
  6. Step 6: Final answer
    x = 28,849.95

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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.