Home / 11,878.48-16,389.96-8,104.40

Finding the Fourth Proportional to 11,878.48, 16,389.96 and 8,104.40

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Solution

The fourth proportional to 11,878.48, 16,389.96 and 8,104.40 is: 11,182.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,878.48 : 16,389.96 = 8,104.40 : x
  2. Step 2: Convert to fraction form
    11,878.48/16,389.96 = 8,104.40/x
  3. Step 3: Cross multiply
    11,878.48x = 16,389.96 × 8,104.40
  4. Step 4: Simplify right side
    11,878.48x = 132,830,791.82
  5. Step 5: Solve for x
    x = 132,830,791.82/11,878.48
  6. Step 6: Final answer
    x = 11,182.47

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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.