Home / 13,187.60-18,199.32-7,219.27

Finding the Fourth Proportional to 13,187.60, 18,199.32 and 7,219.27

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Solution

The fourth proportional to 13,187.60, 18,199.32 and 7,219.27 is: 9,962.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187.60 : 18,199.32 = 7,219.27 : x
  2. Step 2: Convert to fraction form
    13,187.60/18,199.32 = 7,219.27/x
  3. Step 3: Cross multiply
    13,187.60x = 18,199.32 × 7,219.27
  4. Step 4: Simplify right side
    13,187.60x = 131,385,698.20
  5. Step 5: Solve for x
    x = 131,385,698.20/13,187.60
  6. Step 6: Final answer
    x = 9,962.82

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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.