Home / 13,576.25-18,736.31-7,988.33

Finding the Fourth Proportional to 13,576.25, 18,736.31 and 7,988.33

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Solution

The fourth proportional to 13,576.25, 18,736.31 and 7,988.33 is: 11,024.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,576.25 : 18,736.31 = 7,988.33 : x
  2. Step 2: Convert to fraction form
    13,576.25/18,736.31 = 7,988.33/x
  3. Step 3: Cross multiply
    13,576.25x = 18,736.31 × 7,988.33
  4. Step 4: Simplify right side
    13,576.25x = 149,671,787.32
  5. Step 5: Solve for x
    x = 149,671,787.32/13,576.25
  6. Step 6: Final answer
    x = 11,024.53

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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.