Home / 13,189.24-18,205.76-8,157.32

Finding the Fourth Proportional to 13,189.24, 18,205.76 and 8,157.32

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Solution

The fourth proportional to 13,189.24, 18,205.76 and 8,157.32 is: 11,259.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,189.24 : 18,205.76 = 8,157.32 : x
  2. Step 2: Convert to fraction form
    13,189.24/18,205.76 = 8,157.32/x
  3. Step 3: Cross multiply
    13,189.24x = 18,205.76 × 8,157.32
  4. Step 4: Simplify right side
    13,189.24x = 148,510,210.16
  5. Step 5: Solve for x
    x = 148,510,210.16/13,189.24
  6. Step 6: Final answer
    x = 11,259.95

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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.