Home / 15,413.68-21,270.51-8,699.59

Finding the Fourth Proportional to 15,413.68, 21,270.51 and 8,699.59

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Solution

The fourth proportional to 15,413.68, 21,270.51 and 8,699.59 is: 12,005.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,413.68 : 21,270.51 = 8,699.59 : x
  2. Step 2: Convert to fraction form
    15,413.68/21,270.51 = 8,699.59/x
  3. Step 3: Cross multiply
    15,413.68x = 21,270.51 × 8,699.59
  4. Step 4: Simplify right side
    15,413.68x = 185,044,742.68
  5. Step 5: Solve for x
    x = 185,044,742.68/15,413.68
  6. Step 6: Final answer
    x = 12,005.23

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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.