Home / 20,637.36-28,415.79-16,118.29

Finding the Fourth Proportional to 20,637.36, 28,415.79 and 16,118.29

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Solution

The fourth proportional to 20,637.36, 28,415.79 and 16,118.29 is: 22,193.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,637.36 : 28,415.79 = 16,118.29 : x
  2. Step 2: Convert to fraction form
    20,637.36/28,415.79 = 16,118.29/x
  3. Step 3: Cross multiply
    20,637.36x = 28,415.79 × 16,118.29
  4. Step 4: Simplify right side
    20,637.36x = 458,013,943.80
  5. Step 5: Solve for x
    x = 458,013,943.80/20,637.36
  6. Step 6: Final answer
    x = 22,193.44

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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.