Home / 28,416.51-42,620.94-20,556.63

Finding the Fourth Proportional to 28,416.51, 42,620.94 and 20,556.63

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Solution

The fourth proportional to 28,416.51, 42,620.94 and 20,556.63 is: 30,832.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,416.51 : 42,620.94 = 20,556.63 : x
  2. Step 2: Convert to fraction form
    28,416.51/42,620.94 = 20,556.63/x
  3. Step 3: Cross multiply
    28,416.51x = 42,620.94 × 20,556.63
  4. Step 4: Simplify right side
    28,416.51x = 876,142,893.83
  5. Step 5: Solve for x
    x = 876,142,893.83/28,416.51
  6. Step 6: Final answer
    x = 30,832.18

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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.