Home / 19,690.86-29,503.43-13,836.99

Finding the Fourth Proportional to 19,690.86, 29,503.43 and 13,836.99

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Solution

The fourth proportional to 19,690.86, 29,503.43 and 13,836.99 is: 20,732.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,690.86 : 29,503.43 = 13,836.99 : x
  2. Step 2: Convert to fraction form
    19,690.86/29,503.43 = 13,836.99/x
  3. Step 3: Cross multiply
    19,690.86x = 29,503.43 × 13,836.99
  4. Step 4: Simplify right side
    19,690.86x = 408,238,596.69
  5. Step 5: Solve for x
    x = 408,238,596.69/19,690.86
  6. Step 6: Final answer
    x = 20,732.39

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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.