Home / 13,991.56-19,307.62-7,702.72

Finding the Fourth Proportional to 13,991.56, 19,307.62 and 7,702.72

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Solution

The fourth proportional to 13,991.56, 19,307.62 and 7,702.72 is: 10,629.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,991.56 : 19,307.62 = 7,702.72 : x
  2. Step 2: Convert to fraction form
    13,991.56/19,307.62 = 7,702.72/x
  3. Step 3: Cross multiply
    13,991.56x = 19,307.62 × 7,702.72
  4. Step 4: Simplify right side
    13,991.56x = 148,721,190.73
  5. Step 5: Solve for x
    x = 148,721,190.73/13,991.56
  6. Step 6: Final answer
    x = 10,629.35

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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.