Home / 13,658.45-18,849.01-7,690.33

Finding the Fourth Proportional to 13,658.45, 18,849.01 and 7,690.33

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Solution

The fourth proportional to 13,658.45, 18,849.01 and 7,690.33 is: 10,612.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,658.45 : 18,849.01 = 7,690.33 : x
  2. Step 2: Convert to fraction form
    13,658.45/18,849.01 = 7,690.33/x
  3. Step 3: Cross multiply
    13,658.45x = 18,849.01 × 7,690.33
  4. Step 4: Simplify right side
    13,658.45x = 144,955,040.72
  5. Step 5: Solve for x
    x = 144,955,040.72/13,658.45
  6. Step 6: Final answer
    x = 10,612.85

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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.