Home / 28,288.20-42,401.31-14,225.79

Finding the Fourth Proportional to 28,288.20, 42,401.31 and 14,225.79

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Solution

The fourth proportional to 28,288.20, 42,401.31 and 14,225.79 is: 21,323.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,288.20 : 42,401.31 = 14,225.79 : x
  2. Step 2: Convert to fraction form
    28,288.20/42,401.31 = 14,225.79/x
  3. Step 3: Cross multiply
    28,288.20x = 42,401.31 × 14,225.79
  4. Step 4: Simplify right side
    28,288.20x = 603,192,131.78
  5. Step 5: Solve for x
    x = 603,192,131.78/28,288.20
  6. Step 6: Final answer
    x = 21,323.10

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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.