Home / 30,395.63-41,965.23-20,851.51

Finding the Fourth Proportional to 30,395.63, 41,965.23 and 20,851.51

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Solution

The fourth proportional to 30,395.63, 41,965.23 and 20,851.51 is: 28,788.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,395.63 : 41,965.23 = 20,851.51 : x
  2. Step 2: Convert to fraction form
    30,395.63/41,965.23 = 20,851.51/x
  3. Step 3: Cross multiply
    30,395.63x = 41,965.23 × 20,851.51
  4. Step 4: Simplify right side
    30,395.63x = 875,038,413.00
  5. Step 5: Solve for x
    x = 875,038,413.00/30,395.63
  6. Step 6: Final answer
    x = 28,788.30

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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.