Home / 20,587.83-30,872.62-7,440.31

Finding the Fourth Proportional to 20,587.83, 30,872.62 and 7,440.31

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Solution

The fourth proportional to 20,587.83, 30,872.62 and 7,440.31 is: 11,157.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,587.83 : 30,872.62 = 7,440.31 : x
  2. Step 2: Convert to fraction form
    20,587.83/30,872.62 = 7,440.31/x
  3. Step 3: Cross multiply
    20,587.83x = 30,872.62 × 7,440.31
  4. Step 4: Simplify right side
    20,587.83x = 229,701,863.31
  5. Step 5: Solve for x
    x = 229,701,863.31/20,587.83
  6. Step 6: Final answer
    x = 11,157.17

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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.