Home / 20,038.86-30,048.84-11,721.42

Finding the Fourth Proportional to 20,038.86, 30,048.84 and 11,721.42

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Solution

The fourth proportional to 20,038.86, 30,048.84 and 11,721.42 is: 17,576.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,038.86 : 30,048.84 = 11,721.42 : x
  2. Step 2: Convert to fraction form
    20,038.86/30,048.84 = 11,721.42/x
  3. Step 3: Cross multiply
    20,038.86x = 30,048.84 × 11,721.42
  4. Step 4: Simplify right side
    20,038.86x = 352,215,074.15
  5. Step 5: Solve for x
    x = 352,215,074.15/20,038.86
  6. Step 6: Final answer
    x = 17,576.60

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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.