Home / 13,446.74-20,172.28-5,657.78

Finding the Fourth Proportional to 13,446.74, 20,172.28 and 5,657.78

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Solution

The fourth proportional to 13,446.74, 20,172.28 and 5,657.78 is: 8,487.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,446.74 : 20,172.28 = 5,657.78 : x
  2. Step 2: Convert to fraction form
    13,446.74/20,172.28 = 5,657.78/x
  3. Step 3: Cross multiply
    13,446.74x = 20,172.28 × 5,657.78
  4. Step 4: Simplify right side
    13,446.74x = 114,130,322.34
  5. Step 5: Solve for x
    x = 114,130,322.34/13,446.74
  6. Step 6: Final answer
    x = 8,487.58

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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.