Home / 12,871.25-19,315.01-5,475.70

Finding the Fourth Proportional to 12,871.25, 19,315.01 and 5,475.70

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Solution

The fourth proportional to 12,871.25, 19,315.01 and 5,475.70 is: 8,217.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,871.25 : 19,315.01 = 5,475.70 : x
  2. Step 2: Convert to fraction form
    12,871.25/19,315.01 = 5,475.70/x
  3. Step 3: Cross multiply
    12,871.25x = 19,315.01 × 5,475.70
  4. Step 4: Simplify right side
    12,871.25x = 105,763,207.29
  5. Step 5: Solve for x
    x = 105,763,207.29/12,871.25
  6. Step 6: Final answer
    x = 8,217.01

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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.