Home / 10,134.90-13,986.50-5,658.70

Finding the Fourth Proportional to 10,134.90, 13,986.50 and 5,658.70

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Solution

The fourth proportional to 10,134.90, 13,986.50 and 5,658.70 is: 7,809.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,134.90 : 13,986.50 = 5,658.70 : x
  2. Step 2: Convert to fraction form
    10,134.90/13,986.50 = 5,658.70/x
  3. Step 3: Cross multiply
    10,134.90x = 13,986.50 × 5,658.70
  4. Step 4: Simplify right side
    10,134.90x = 79,145,379.26
  5. Step 5: Solve for x
    x = 79,145,379.26/10,134.90
  6. Step 6: Final answer
    x = 7,809.20

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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.