Home / 13,105.74-19,669.90-6,870.08

Finding the Fourth Proportional to 13,105.74, 19,669.90 and 6,870.08

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Solution

The fourth proportional to 13,105.74, 19,669.90 and 6,870.08 is: 10,311.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,105.74 : 19,669.90 = 6,870.08 : x
  2. Step 2: Convert to fraction form
    13,105.74/19,669.90 = 6,870.08/x
  3. Step 3: Cross multiply
    13,105.74x = 19,669.90 × 6,870.08
  4. Step 4: Simplify right side
    13,105.74x = 135,133,786.59
  5. Step 5: Solve for x
    x = 135,133,786.59/13,105.74
  6. Step 6: Final answer
    x = 10,311.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.