Home / 13,187.95-18,199.60-8,152.04

Finding the Fourth Proportional to 13,187.95, 18,199.60 and 8,152.04

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Solution

The fourth proportional to 13,187.95, 18,199.60 and 8,152.04 is: 11,249.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187.95 : 18,199.60 = 8,152.04 : x
  2. Step 2: Convert to fraction form
    13,187.95/18,199.60 = 8,152.04/x
  3. Step 3: Cross multiply
    13,187.95x = 18,199.60 × 8,152.04
  4. Step 4: Simplify right side
    13,187.95x = 148,363,903.77
  5. Step 5: Solve for x
    x = 148,363,903.77/13,187.95
  6. Step 6: Final answer
    x = 11,249.96

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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.