Home / 27,980.39-38,602.37-16,650.36

Finding the Fourth Proportional to 27,980.39, 38,602.37 and 16,650.36

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Solution

The fourth proportional to 27,980.39, 38,602.37 and 16,650.36 is: 22,971.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,980.39 : 38,602.37 = 16,650.36 : x
  2. Step 2: Convert to fraction form
    27,980.39/38,602.37 = 16,650.36/x
  3. Step 3: Cross multiply
    27,980.39x = 38,602.37 × 16,650.36
  4. Step 4: Simplify right side
    27,980.39x = 642,743,398.98
  5. Step 5: Solve for x
    x = 642,743,398.98/27,980.39
  6. Step 6: Final answer
    x = 22,971.21

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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.