Home / 11,888.21-16,404.57-7,107.20

Finding the Fourth Proportional to 11,888.21, 16,404.57 and 7,107.20

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Solution

The fourth proportional to 11,888.21, 16,404.57 and 7,107.20 is: 9,807.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,888.21 : 16,404.57 = 7,107.20 : x
  2. Step 2: Convert to fraction form
    11,888.21/16,404.57 = 7,107.20/x
  3. Step 3: Cross multiply
    11,888.21x = 16,404.57 × 7,107.20
  4. Step 4: Simplify right side
    11,888.21x = 116,590,559.90
  5. Step 5: Solve for x
    x = 116,590,559.90/11,888.21
  6. Step 6: Final answer
    x = 9,807.24

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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.