Home / 22,155.51-30,577.86-13,208.25

Finding the Fourth Proportional to 22,155.51, 30,577.86 and 13,208.25

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Solution

The fourth proportional to 22,155.51, 30,577.86 and 13,208.25 is: 18,229.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,155.51 : 30,577.86 = 13,208.25 : x
  2. Step 2: Convert to fraction form
    22,155.51/30,577.86 = 13,208.25/x
  3. Step 3: Cross multiply
    22,155.51x = 30,577.86 × 13,208.25
  4. Step 4: Simplify right side
    22,155.51x = 403,880,019.35
  5. Step 5: Solve for x
    x = 403,880,019.35/22,155.51
  6. Step 6: Final answer
    x = 18,229.33

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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.