Home / 20,429.78-30,626.18-14,192.72

Finding the Fourth Proportional to 20,429.78, 30,626.18 and 14,192.72

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Solution

The fourth proportional to 20,429.78, 30,626.18 and 14,192.72 is: 21,276.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,429.78 : 30,626.18 = 14,192.72 : x
  2. Step 2: Convert to fraction form
    20,429.78/30,626.18 = 14,192.72/x
  3. Step 3: Cross multiply
    20,429.78x = 30,626.18 × 14,192.72
  4. Step 4: Simplify right side
    20,429.78x = 434,668,573.32
  5. Step 5: Solve for x
    x = 434,668,573.32/20,429.78
  6. Step 6: Final answer
    x = 21,276.22

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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.