Home / 13,445.40-20,157.30-4,680.12

Finding the Fourth Proportional to 13,445.40, 20,157.30 and 4,680.12

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Solution

The fourth proportional to 13,445.40, 20,157.30 and 4,680.12 is: 7,016.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.40 : 20,157.30 = 4,680.12 : x
  2. Step 2: Convert to fraction form
    13,445.40/20,157.30 = 4,680.12/x
  3. Step 3: Cross multiply
    13,445.40x = 20,157.30 × 4,680.12
  4. Step 4: Simplify right side
    13,445.40x = 94,338,582.88
  5. Step 5: Solve for x
    x = 94,338,582.88/13,445.40
  6. Step 6: Final answer
    x = 7,016.42

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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.