Home / 10,142.85-13,997.67-5,666.70

Finding the Fourth Proportional to 10,142.85, 13,997.67 and 5,666.70

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Solution

The fourth proportional to 10,142.85, 13,997.67 and 5,666.70 is: 7,820.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,142.85 : 13,997.67 = 5,666.70 : x
  2. Step 2: Convert to fraction form
    10,142.85/13,997.67 = 5,666.70/x
  3. Step 3: Cross multiply
    10,142.85x = 13,997.67 × 5,666.70
  4. Step 4: Simplify right side
    10,142.85x = 79,320,596.59
  5. Step 5: Solve for x
    x = 79,320,596.59/10,142.85
  6. Step 6: Final answer
    x = 7,820.35

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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.