Home / 13,430.90-20,146.40-4,546.30

Finding the Fourth Proportional to 13,430.90, 20,146.40 and 4,546.30

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Solution

The fourth proportional to 13,430.90, 20,146.40 and 4,546.30 is: 6,819.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,430.90 : 20,146.40 = 4,546.30 : x
  2. Step 2: Convert to fraction form
    13,430.90/20,146.40 = 4,546.30/x
  3. Step 3: Cross multiply
    13,430.90x = 20,146.40 × 4,546.30
  4. Step 4: Simplify right side
    13,430.90x = 91,591,578.32
  5. Step 5: Solve for x
    x = 91,591,578.32/13,430.90
  6. Step 6: Final answer
    x = 6,819.47

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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.