Home / 9,987.48-13,682.70-9,613.58

Finding the Fourth Proportional to 9,987.48, 13,682.70 and 9,613.58

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Solution

The fourth proportional to 9,987.48, 13,682.70 and 9,613.58 is: 13,170.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,987.48 : 13,682.70 = 9,613.58 : x
  2. Step 2: Convert to fraction form
    9,987.48/13,682.70 = 9,613.58/x
  3. Step 3: Cross multiply
    9,987.48x = 13,682.70 × 9,613.58
  4. Step 4: Simplify right side
    9,987.48x = 131,539,662.65
  5. Step 5: Solve for x
    x = 131,539,662.65/9,987.48
  6. Step 6: Final answer
    x = 13,170.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.