Home / 13,219.32-18,242.34-8,503.59

Finding the Fourth Proportional to 13,219.32, 18,242.34 and 8,503.59

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Solution

The fourth proportional to 13,219.32, 18,242.34 and 8,503.59 is: 11,734.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.32 : 18,242.34 = 8,503.59 : x
  2. Step 2: Convert to fraction form
    13,219.32/18,242.34 = 8,503.59/x
  3. Step 3: Cross multiply
    13,219.32x = 18,242.34 × 8,503.59
  4. Step 4: Simplify right side
    13,219.32x = 155,125,380.00
  5. Step 5: Solve for x
    x = 155,125,380.00/13,219.32
  6. Step 6: Final answer
    x = 11,734.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.