Home / 20,425.76-30,583.56-14,172.56

Finding the Fourth Proportional to 20,425.76, 30,583.56 and 14,172.56

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Solution

The fourth proportional to 20,425.76, 30,583.56 and 14,172.56 is: 21,220.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,425.76 : 30,583.56 = 14,172.56 : x
  2. Step 2: Convert to fraction form
    20,425.76/30,583.56 = 14,172.56/x
  3. Step 3: Cross multiply
    20,425.76x = 30,583.56 × 14,172.56
  4. Step 4: Simplify right side
    20,425.76x = 433,447,339.11
  5. Step 5: Solve for x
    x = 433,447,339.11/20,425.76
  6. Step 6: Final answer
    x = 21,220.62

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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.