Home / 13,282.99-18,331.62-7,315.21

Finding the Fourth Proportional to 13,282.99, 18,331.62 and 7,315.21

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Solution

The fourth proportional to 13,282.99, 18,331.62 and 7,315.21 is: 10,095.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,282.99 : 18,331.62 = 7,315.21 : x
  2. Step 2: Convert to fraction form
    13,282.99/18,331.62 = 7,315.21/x
  3. Step 3: Cross multiply
    13,282.99x = 18,331.62 × 7,315.21
  4. Step 4: Simplify right side
    13,282.99x = 134,099,645.42
  5. Step 5: Solve for x
    x = 134,099,645.42/13,282.99
  6. Step 6: Final answer
    x = 10,095.59

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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.