Home / 15,128.93-20,875.95-8,413.22

Finding the Fourth Proportional to 15,128.93, 20,875.95 and 8,413.22

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Solution

The fourth proportional to 15,128.93, 20,875.95 and 8,413.22 is: 11,609.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,128.93 : 20,875.95 = 8,413.22 : x
  2. Step 2: Convert to fraction form
    15,128.93/20,875.95 = 8,413.22/x
  3. Step 3: Cross multiply
    15,128.93x = 20,875.95 × 8,413.22
  4. Step 4: Simplify right side
    15,128.93x = 175,633,855.68
  5. Step 5: Solve for x
    x = 175,633,855.68/15,128.93
  6. Step 6: Final answer
    x = 11,609.14

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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.