Home / 15,487.17-21,371.72-8,413.35

Finding the Fourth Proportional to 15,487.17, 21,371.72 and 8,413.35

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Solution

The fourth proportional to 15,487.17, 21,371.72 and 8,413.35 is: 11,610.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,487.17 : 21,371.72 = 8,413.35 : x
  2. Step 2: Convert to fraction form
    15,487.17/21,371.72 = 8,413.35/x
  3. Step 3: Cross multiply
    15,487.17x = 21,371.72 × 8,413.35
  4. Step 4: Simplify right side
    15,487.17x = 179,807,718.40
  5. Step 5: Solve for x
    x = 179,807,718.40/15,487.17
  6. Step 6: Final answer
    x = 11,610.11

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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.