Home / 13,421.03-20,135.20-4,656.63

Finding the Fourth Proportional to 13,421.03, 20,135.20 and 4,656.63

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Solution

The fourth proportional to 13,421.03, 20,135.20 and 4,656.63 is: 6,986.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.03 : 20,135.20 = 4,656.63 : x
  2. Step 2: Convert to fraction form
    13,421.03/20,135.20 = 4,656.63/x
  3. Step 3: Cross multiply
    13,421.03x = 20,135.20 × 4,656.63
  4. Step 4: Simplify right side
    13,421.03x = 93,762,164.73
  5. Step 5: Solve for x
    x = 93,762,164.73/13,421.03
  6. Step 6: Final answer
    x = 6,986.21

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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.