Home / 18,742.86-28,107.45-5,590.80

Finding the Fourth Proportional to 18,742.86, 28,107.45 and 5,590.80

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Solution

The fourth proportional to 18,742.86, 28,107.45 and 5,590.80 is: 8,384.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,742.86 : 28,107.45 = 5,590.80 : x
  2. Step 2: Convert to fraction form
    18,742.86/28,107.45 = 5,590.80/x
  3. Step 3: Cross multiply
    18,742.86x = 28,107.45 × 5,590.80
  4. Step 4: Simplify right side
    18,742.86x = 157,143,131.46
  5. Step 5: Solve for x
    x = 157,143,131.46/18,742.86
  6. Step 6: Final answer
    x = 8,384.16

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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.