Home / 20,081.42-27,677.77-13,355.03

Finding the Fourth Proportional to 20,081.42, 27,677.77 and 13,355.03

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Solution

The fourth proportional to 20,081.42, 27,677.77 and 13,355.03 is: 18,406.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,081.42 : 27,677.77 = 13,355.03 : x
  2. Step 2: Convert to fraction form
    20,081.42/27,677.77 = 13,355.03/x
  3. Step 3: Cross multiply
    20,081.42x = 27,677.77 × 13,355.03
  4. Step 4: Simplify right side
    20,081.42x = 369,637,328.80
  5. Step 5: Solve for x
    x = 369,637,328.80/20,081.42
  6. Step 6: Final answer
    x = 18,406.93

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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.