Home / 10,145.03-13,998.51-5,668.55

Finding the Fourth Proportional to 10,145.03, 13,998.51 and 5,668.55

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Solution

The fourth proportional to 10,145.03, 13,998.51 and 5,668.55 is: 7,821.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,145.03 : 13,998.51 = 5,668.55 : x
  2. Step 2: Convert to fraction form
    10,145.03/13,998.51 = 5,668.55/x
  3. Step 3: Cross multiply
    10,145.03x = 13,998.51 × 5,668.55
  4. Step 4: Simplify right side
    10,145.03x = 79,351,253.86
  5. Step 5: Solve for x
    x = 79,351,253.86/10,145.03
  6. Step 6: Final answer
    x = 7,821.69

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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.