Home / 13,971.20-19,279.88-7,683.58

Finding the Fourth Proportional to 13,971.20, 19,279.88 and 7,683.58

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Solution

The fourth proportional to 13,971.20, 19,279.88 and 7,683.58 is: 10,603.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,971.20 : 19,279.88 = 7,683.58 : x
  2. Step 2: Convert to fraction form
    13,971.20/19,279.88 = 7,683.58/x
  3. Step 3: Cross multiply
    13,971.20x = 19,279.88 × 7,683.58
  4. Step 4: Simplify right side
    13,971.20x = 148,138,413.75
  5. Step 5: Solve for x
    x = 148,138,413.75/13,971.20
  6. Step 6: Final answer
    x = 10,603.13

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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.