Home / 10,143.07-13,997.51-5,666.86

Finding the Fourth Proportional to 10,143.07, 13,997.51 and 5,666.86

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Solution

The fourth proportional to 10,143.07, 13,997.51 and 5,666.86 is: 7,820.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,143.07 : 13,997.51 = 5,666.86 : x
  2. Step 2: Convert to fraction form
    10,143.07/13,997.51 = 5,666.86/x
  3. Step 3: Cross multiply
    10,143.07x = 13,997.51 × 5,666.86
  4. Step 4: Simplify right side
    10,143.07x = 79,321,939.93
  5. Step 5: Solve for x
    x = 79,321,939.93/10,143.07
  6. Step 6: Final answer
    x = 7,820.31

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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.