Home / 9,987.49-13,778.53-7,005.27

Finding the Fourth Proportional to 9,987.49, 13,778.53 and 7,005.27

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Solution

The fourth proportional to 9,987.49, 13,778.53 and 7,005.27 is: 9,664.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,987.49 : 13,778.53 = 7,005.27 : x
  2. Step 2: Convert to fraction form
    9,987.49/13,778.53 = 7,005.27/x
  3. Step 3: Cross multiply
    9,987.49x = 13,778.53 × 7,005.27
  4. Step 4: Simplify right side
    9,987.49x = 96,522,299.21
  5. Step 5: Solve for x
    x = 96,522,299.21/9,987.49
  6. Step 6: Final answer
    x = 9,664.32

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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.