Home / 20,429.87-30,666.27-18,104.77

Finding the Fourth Proportional to 20,429.87, 30,666.27 and 18,104.77

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Solution

The fourth proportional to 20,429.87, 30,666.27 and 18,104.77 is: 27,176.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,429.87 : 30,666.27 = 18,104.77 : x
  2. Step 2: Convert to fraction form
    20,429.87/30,666.27 = 18,104.77/x
  3. Step 3: Cross multiply
    20,429.87x = 30,666.27 × 18,104.77
  4. Step 4: Simplify right side
    20,429.87x = 555,205,647.92
  5. Step 5: Solve for x
    x = 555,205,647.92/20,429.87
  6. Step 6: Final answer
    x = 27,176.17

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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.