Home / 10,145.68-13,999.64-5,668.87

Finding the Fourth Proportional to 10,145.68, 13,999.64 and 5,668.87

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Solution

The fourth proportional to 10,145.68, 13,999.64 and 5,668.87 is: 7,822.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,145.68 : 13,999.64 = 5,668.87 : x
  2. Step 2: Convert to fraction form
    10,145.68/13,999.64 = 5,668.87/x
  3. Step 3: Cross multiply
    10,145.68x = 13,999.64 × 5,668.87
  4. Step 4: Simplify right side
    10,145.68x = 79,362,139.21
  5. Step 5: Solve for x
    x = 79,362,139.21/10,145.68
  6. Step 6: Final answer
    x = 7,822.26

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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.