Home / 28,008.51-38,625.77-20,442.87

Finding the Fourth Proportional to 28,008.51, 38,625.77 and 20,442.87

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Solution

The fourth proportional to 28,008.51, 38,625.77 and 20,442.87 is: 28,192.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,008.51 : 38,625.77 = 20,442.87 : x
  2. Step 2: Convert to fraction form
    28,008.51/38,625.77 = 20,442.87/x
  3. Step 3: Cross multiply
    28,008.51x = 38,625.77 × 20,442.87
  4. Step 4: Simplify right side
    28,008.51x = 789,621,594.76
  5. Step 5: Solve for x
    x = 789,621,594.76/28,008.51
  6. Step 6: Final answer
    x = 28,192.20

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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.