Home / 13,204.77-18,223.56-8,720.70

Finding the Fourth Proportional to 13,204.77, 18,223.56 and 8,720.70

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Solution

The fourth proportional to 13,204.77, 18,223.56 and 8,720.70 is: 12,035.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,204.77 : 18,223.56 = 8,720.70 : x
  2. Step 2: Convert to fraction form
    13,204.77/18,223.56 = 8,720.70/x
  3. Step 3: Cross multiply
    13,204.77x = 18,223.56 × 8,720.70
  4. Step 4: Simplify right side
    13,204.77x = 158,922,199.69
  5. Step 5: Solve for x
    x = 158,922,199.69/13,204.77
  6. Step 6: Final answer
    x = 12,035.21

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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.