Home / 10,143.21-13,997.13-5,666.07

Finding the Fourth Proportional to 10,143.21, 13,997.13 and 5,666.07

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Solution

The fourth proportional to 10,143.21, 13,997.13 and 5,666.07 is: 7,818.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,143.21 : 13,997.13 = 5,666.07 : x
  2. Step 2: Convert to fraction form
    10,143.21/13,997.13 = 5,666.07/x
  3. Step 3: Cross multiply
    10,143.21x = 13,997.13 × 5,666.07
  4. Step 4: Simplify right side
    10,143.21x = 79,308,718.38
  5. Step 5: Solve for x
    x = 79,308,718.38/10,143.21
  6. Step 6: Final answer
    x = 7,818.90

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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.