Home / 20,578.02-28,397.40-11,625.36

Finding the Fourth Proportional to 20,578.02, 28,397.40 and 11,625.36

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Solution

The fourth proportional to 20,578.02, 28,397.40 and 11,625.36 is: 16,042.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,578.02 : 28,397.40 = 11,625.36 : x
  2. Step 2: Convert to fraction form
    20,578.02/28,397.40 = 11,625.36/x
  3. Step 3: Cross multiply
    20,578.02x = 28,397.40 × 11,625.36
  4. Step 4: Simplify right side
    20,578.02x = 330,129,998.06
  5. Step 5: Solve for x
    x = 330,129,998.06/20,578.02
  6. Step 6: Final answer
    x = 16,042.85

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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.