Home / 20,111.64-30,148.56-13,539.84

Finding the Fourth Proportional to 20,111.64, 30,148.56 and 13,539.84

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Solution

The fourth proportional to 20,111.64, 30,148.56 and 13,539.84 is: 20,297.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111.64 : 30,148.56 = 13,539.84 : x
  2. Step 2: Convert to fraction form
    20,111.64/30,148.56 = 13,539.84/x
  3. Step 3: Cross multiply
    20,111.64x = 30,148.56 × 13,539.84
  4. Step 4: Simplify right side
    20,111.64x = 408,206,678.63
  5. Step 5: Solve for x
    x = 408,206,678.63/20,111.64
  6. Step 6: Final answer
    x = 20,297.04

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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.