Home / 13,415.90-20,133.45-5,630.30

Finding the Fourth Proportional to 13,415.90, 20,133.45 and 5,630.30

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Solution

The fourth proportional to 13,415.90, 20,133.45 and 5,630.30 is: 8,449.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,415.90 : 20,133.45 = 5,630.30 : x
  2. Step 2: Convert to fraction form
    13,415.90/20,133.45 = 5,630.30/x
  3. Step 3: Cross multiply
    13,415.90x = 20,133.45 × 5,630.30
  4. Step 4: Simplify right side
    13,415.90x = 113,357,363.54
  5. Step 5: Solve for x
    x = 113,357,363.54/13,415.90
  6. Step 6: Final answer
    x = 8,449.48

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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.