Home / 13,808.68-19,053.36-8,145.21

Finding the Fourth Proportional to 13,808.68, 19,053.36 and 8,145.21

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Solution

The fourth proportional to 13,808.68, 19,053.36 and 8,145.21 is: 11,238.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,808.68 : 19,053.36 = 8,145.21 : x
  2. Step 2: Convert to fraction form
    13,808.68/19,053.36 = 8,145.21/x
  3. Step 3: Cross multiply
    13,808.68x = 19,053.36 × 8,145.21
  4. Step 4: Simplify right side
    13,808.68x = 155,193,618.41
  5. Step 5: Solve for x
    x = 155,193,618.41/13,808.68
  6. Step 6: Final answer
    x = 11,238.85

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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.