Home / 10,145.28-13,999.11-5,668.82

Finding the Fourth Proportional to 10,145.28, 13,999.11 and 5,668.82

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Solution

The fourth proportional to 10,145.28, 13,999.11 and 5,668.82 is: 7,822.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,145.28 : 13,999.11 = 5,668.82 : x
  2. Step 2: Convert to fraction form
    10,145.28/13,999.11 = 5,668.82/x
  3. Step 3: Cross multiply
    10,145.28x = 13,999.11 × 5,668.82
  4. Step 4: Simplify right side
    10,145.28x = 79,358,364.75
  5. Step 5: Solve for x
    x = 79,358,364.75/10,145.28
  6. Step 6: Final answer
    x = 7,822.20

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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.