Home / 20,368.01-28,106.29-11,413.78

Finding the Fourth Proportional to 20,368.01, 28,106.29 and 11,413.78

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Solution

The fourth proportional to 20,368.01, 28,106.29 and 11,413.78 is: 15,750.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,368.01 : 28,106.29 = 11,413.78 : x
  2. Step 2: Convert to fraction form
    20,368.01/28,106.29 = 11,413.78/x
  3. Step 3: Cross multiply
    20,368.01x = 28,106.29 × 11,413.78
  4. Step 4: Simplify right side
    20,368.01x = 320,798,954.68
  5. Step 5: Solve for x
    x = 320,798,954.68/20,368.01
  6. Step 6: Final answer
    x = 15,750.14

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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.