Home / 15,140.36-20,893.70-8,516.36

Finding the Fourth Proportional to 15,140.36, 20,893.70 and 8,516.36

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Solution

The fourth proportional to 15,140.36, 20,893.70 and 8,516.36 is: 11,752.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,140.36 : 20,893.70 = 8,516.36 : x
  2. Step 2: Convert to fraction form
    15,140.36/20,893.70 = 8,516.36/x
  3. Step 3: Cross multiply
    15,140.36x = 20,893.70 × 8,516.36
  4. Step 4: Simplify right side
    15,140.36x = 177,938,270.93
  5. Step 5: Solve for x
    x = 177,938,270.93/15,140.36
  6. Step 6: Final answer
    x = 11,752.58

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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.