Home / 11,465.21-15,828.48-8,771.36

Finding the Fourth Proportional to 11,465.21, 15,828.48 and 8,771.36

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Solution

The fourth proportional to 11,465.21, 15,828.48 and 8,771.36 is: 12,109.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,465.21 : 15,828.48 = 8,771.36 : x
  2. Step 2: Convert to fraction form
    11,465.21/15,828.48 = 8,771.36/x
  3. Step 3: Cross multiply
    11,465.21x = 15,828.48 × 8,771.36
  4. Step 4: Simplify right side
    11,465.21x = 138,837,217.19
  5. Step 5: Solve for x
    x = 138,837,217.19/11,465.21
  6. Step 6: Final answer
    x = 12,109.44

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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.