Home / 10,145.90-13,999.56-5,668.22

Finding the Fourth Proportional to 10,145.90, 13,999.56 and 5,668.22

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Solution

The fourth proportional to 10,145.90, 13,999.56 and 5,668.22 is: 7,821.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,145.90 : 13,999.56 = 5,668.22 : x
  2. Step 2: Convert to fraction form
    10,145.90/13,999.56 = 5,668.22/x
  3. Step 3: Cross multiply
    10,145.90x = 13,999.56 × 5,668.22
  4. Step 4: Simplify right side
    10,145.90x = 79,352,585.98
  5. Step 5: Solve for x
    x = 79,352,585.98/10,145.90
  6. Step 6: Final answer
    x = 7,821.15

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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.