Home / 13,319.32-18,381.36-8,015.80

Finding the Fourth Proportional to 13,319.32, 18,381.36 and 8,015.80

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Solution

The fourth proportional to 13,319.32, 18,381.36 and 8,015.80 is: 11,062.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.32 : 18,381.36 = 8,015.80 : x
  2. Step 2: Convert to fraction form
    13,319.32/18,381.36 = 8,015.80/x
  3. Step 3: Cross multiply
    13,319.32x = 18,381.36 × 8,015.80
  4. Step 4: Simplify right side
    13,319.32x = 147,341,305.49
  5. Step 5: Solve for x
    x = 147,341,305.49/13,319.32
  6. Step 6: Final answer
    x = 11,062.22

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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.