Home / 13,210.56-18,250.40-8,684.04

Finding the Fourth Proportional to 13,210.56, 18,250.40 and 8,684.04

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Solution

The fourth proportional to 13,210.56, 18,250.40 and 8,684.04 is: 11,997.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,210.56 : 18,250.40 = 8,684.04 : x
  2. Step 2: Convert to fraction form
    13,210.56/18,250.40 = 8,684.04/x
  3. Step 3: Cross multiply
    13,210.56x = 18,250.40 × 8,684.04
  4. Step 4: Simplify right side
    13,210.56x = 158,487,203.62
  5. Step 5: Solve for x
    x = 158,487,203.62/13,210.56
  6. Step 6: Final answer
    x = 11,997.01

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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.