Home / 10,135.12-13,986.76-5,658.80

Finding the Fourth Proportional to 10,135.12, 13,986.76 and 5,658.80

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Solution

The fourth proportional to 10,135.12, 13,986.76 and 5,658.80 is: 7,809.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,135.12 : 13,986.76 = 5,658.80 : x
  2. Step 2: Convert to fraction form
    10,135.12/13,986.76 = 5,658.80/x
  3. Step 3: Cross multiply
    10,135.12x = 13,986.76 × 5,658.80
  4. Step 4: Simplify right side
    10,135.12x = 79,148,277.49
  5. Step 5: Solve for x
    x = 79,148,277.49/10,135.12
  6. Step 6: Final answer
    x = 7,809.31

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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.