Home / 20,370.76-28,111.61-12,413.00

Finding the Fourth Proportional to 20,370.76, 28,111.61 and 12,413.00

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Solution

The fourth proportional to 20,370.76, 28,111.61 and 12,413.00 is: 17,129.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,370.76 : 28,111.61 = 12,413.00 : x
  2. Step 2: Convert to fraction form
    20,370.76/28,111.61 = 12,413.00/x
  3. Step 3: Cross multiply
    20,370.76x = 28,111.61 × 12,413.00
  4. Step 4: Simplify right side
    20,370.76x = 348,949,516.24
  5. Step 5: Solve for x
    x = 348,949,516.24/20,370.76
  6. Step 6: Final answer
    x = 17,129.92

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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.