Home / 13,990.12-19,305.80-8,017.64

Finding the Fourth Proportional to 13,990.12, 19,305.80 and 8,017.64

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Solution

The fourth proportional to 13,990.12, 19,305.80 and 8,017.64 is: 11,064.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.12 : 19,305.80 = 8,017.64 : x
  2. Step 2: Convert to fraction form
    13,990.12/19,305.80 = 8,017.64/x
  3. Step 3: Cross multiply
    13,990.12x = 19,305.80 × 8,017.64
  4. Step 4: Simplify right side
    13,990.12x = 154,786,954.31
  5. Step 5: Solve for x
    x = 154,786,954.31/13,990.12
  6. Step 6: Final answer
    x = 11,064.02

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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.