Home / 31,413.16-43,360.28-20,113.08

Finding the Fourth Proportional to 31,413.16, 43,360.28 and 20,113.08

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Solution

The fourth proportional to 31,413.16, 43,360.28 and 20,113.08 is: 27,762.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,413.16 : 43,360.28 = 20,113.08 : x
  2. Step 2: Convert to fraction form
    31,413.16/43,360.28 = 20,113.08/x
  3. Step 3: Cross multiply
    31,413.16x = 43,360.28 × 20,113.08
  4. Step 4: Simplify right side
    31,413.16x = 872,108,780.46
  5. Step 5: Solve for x
    x = 872,108,780.46/31,413.16
  6. Step 6: Final answer
    x = 27,762.53

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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.