Home / 13,820.90-20,732.67-4,458.69

Finding the Fourth Proportional to 13,820.90, 20,732.67 and 4,458.69

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Solution

The fourth proportional to 13,820.90, 20,732.67 and 4,458.69 is: 6,688.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,820.90 : 20,732.67 = 4,458.69 : x
  2. Step 2: Convert to fraction form
    13,820.90/20,732.67 = 4,458.69/x
  3. Step 3: Cross multiply
    13,820.90x = 20,732.67 × 4,458.69
  4. Step 4: Simplify right side
    13,820.90x = 92,440,548.40
  5. Step 5: Solve for x
    x = 92,440,548.40/13,820.90
  6. Step 6: Final answer
    x = 6,688.46

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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.