Home / 13,915.83-19,203.26-8,172.51

Finding the Fourth Proportional to 13,915.83, 19,203.26 and 8,172.51

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Solution

The fourth proportional to 13,915.83, 19,203.26 and 8,172.51 is: 11,277.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,915.83 : 19,203.26 = 8,172.51 : x
  2. Step 2: Convert to fraction form
    13,915.83/19,203.26 = 8,172.51/x
  3. Step 3: Cross multiply
    13,915.83x = 19,203.26 × 8,172.51
  4. Step 4: Simplify right side
    13,915.83x = 156,938,854.81
  5. Step 5: Solve for x
    x = 156,938,854.81/13,915.83
  6. Step 6: Final answer
    x = 11,277.72

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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.