Home / 28,855.77-43,290.14-9,135.51

Finding the Fourth Proportional to 28,855.77, 43,290.14 and 9,135.51

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Solution

The fourth proportional to 28,855.77, 43,290.14 and 9,135.51 is: 13,705.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,855.77 : 43,290.14 = 9,135.51 : x
  2. Step 2: Convert to fraction form
    28,855.77/43,290.14 = 9,135.51/x
  3. Step 3: Cross multiply
    28,855.77x = 43,290.14 × 9,135.51
  4. Step 4: Simplify right side
    28,855.77x = 395,477,506.87
  5. Step 5: Solve for x
    x = 395,477,506.87/28,855.77
  6. Step 6: Final answer
    x = 13,705.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.