Home / 13,761.54-20,615.74-8,219.32

Finding the Fourth Proportional to 13,761.54, 20,615.74 and 8,219.32

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Solution

The fourth proportional to 13,761.54, 20,615.74 and 8,219.32 is: 12,313.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,761.54 : 20,615.74 = 8,219.32 : x
  2. Step 2: Convert to fraction form
    13,761.54/20,615.74 = 8,219.32/x
  3. Step 3: Cross multiply
    13,761.54x = 20,615.74 × 8,219.32
  4. Step 4: Simplify right side
    13,761.54x = 169,447,364.10
  5. Step 5: Solve for x
    x = 169,447,364.10/13,761.54
  6. Step 6: Final answer
    x = 12,313.11

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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.