Home / 40,121.32-60,185.34-13,815.40

Finding the Fourth Proportional to 40,121.32, 60,185.34 and 13,815.40

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Solution

The fourth proportional to 40,121.32, 60,185.34 and 13,815.40 is: 20,724.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,121.32 : 60,185.34 = 13,815.40 : x
  2. Step 2: Convert to fraction form
    40,121.32/60,185.34 = 13,815.40/x
  3. Step 3: Cross multiply
    40,121.32x = 60,185.34 × 13,815.40
  4. Step 4: Simplify right side
    40,121.32x = 831,484,546.24
  5. Step 5: Solve for x
    x = 831,484,546.24/40,121.32
  6. Step 6: Final answer
    x = 20,724.26

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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.