Home / 18,445.32-25,478.55-14,921.82

Finding the Fourth Proportional to 18,445.32, 25,478.55 and 14,921.82

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Solution

The fourth proportional to 18,445.32, 25,478.55 and 14,921.82 is: 20,611.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,445.32 : 25,478.55 = 14,921.82 : x
  2. Step 2: Convert to fraction form
    18,445.32/25,478.55 = 14,921.82/x
  3. Step 3: Cross multiply
    18,445.32x = 25,478.55 × 14,921.82
  4. Step 4: Simplify right side
    18,445.32x = 380,186,336.96
  5. Step 5: Solve for x
    x = 380,186,336.96/18,445.32
  6. Step 6: Final answer
    x = 20,611.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.