Home / 13,657.14-20,478.78-5,330.70

Finding the Fourth Proportional to 13,657.14, 20,478.78 and 5,330.70

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Solution

The fourth proportional to 13,657.14, 20,478.78 and 5,330.70 is: 7,993.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,657.14 : 20,478.78 = 5,330.70 : x
  2. Step 2: Convert to fraction form
    13,657.14/20,478.78 = 5,330.70/x
  3. Step 3: Cross multiply
    13,657.14x = 20,478.78 × 5,330.70
  4. Step 4: Simplify right side
    13,657.14x = 109,166,232.55
  5. Step 5: Solve for x
    x = 109,166,232.55/13,657.14
  6. Step 6: Final answer
    x = 7,993.35

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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.