Home / 20,810.99-28,722.39-16,368.42

Finding the Fourth Proportional to 20,810.99, 28,722.39 and 16,368.42

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Solution

The fourth proportional to 20,810.99, 28,722.39 and 16,368.42 is: 22,590.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,810.99 : 28,722.39 = 16,368.42 : x
  2. Step 2: Convert to fraction form
    20,810.99/28,722.39 = 16,368.42/x
  3. Step 3: Cross multiply
    20,810.99x = 28,722.39 × 16,368.42
  4. Step 4: Simplify right side
    20,810.99x = 470,140,142.92
  5. Step 5: Solve for x
    x = 470,140,142.92/20,810.99
  6. Step 6: Final answer
    x = 22,590.96

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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.