Home / 15,487.15-21,372.30-8,413.58

Finding the Fourth Proportional to 15,487.15, 21,372.30 and 8,413.58

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Solution

The fourth proportional to 15,487.15, 21,372.30 and 8,413.58 is: 11,610.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,487.15 : 21,372.30 = 8,413.58 : x
  2. Step 2: Convert to fraction form
    15,487.15/21,372.30 = 8,413.58/x
  3. Step 3: Cross multiply
    15,487.15x = 21,372.30 × 8,413.58
  4. Step 4: Simplify right side
    15,487.15x = 179,817,513.77
  5. Step 5: Solve for x
    x = 179,817,513.77/15,487.15
  6. Step 6: Final answer
    x = 11,610.76

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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.