Home / 20,429.28-30,625.43-14,192.21

Finding the Fourth Proportional to 20,429.28, 30,625.43 and 14,192.21

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Solution

The fourth proportional to 20,429.28, 30,625.43 and 14,192.21 is: 21,275.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,429.28 : 30,625.43 = 14,192.21 : x
  2. Step 2: Convert to fraction form
    20,429.28/30,625.43 = 14,192.21/x
  3. Step 3: Cross multiply
    20,429.28x = 30,625.43 × 14,192.21
  4. Step 4: Simplify right side
    20,429.28x = 434,642,539.50
  5. Step 5: Solve for x
    x = 434,642,539.50/20,429.28
  6. Step 6: Final answer
    x = 21,275.47

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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.