Home / 31,129.63-42,959.01-16,982.77

Finding the Fourth Proportional to 31,129.63, 42,959.01 and 16,982.77

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Solution

The fourth proportional to 31,129.63, 42,959.01 and 16,982.77 is: 23,436.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,129.63 : 42,959.01 = 16,982.77 : x
  2. Step 2: Convert to fraction form
    31,129.63/42,959.01 = 16,982.77/x
  3. Step 3: Cross multiply
    31,129.63x = 42,959.01 × 16,982.77
  4. Step 4: Simplify right side
    31,129.63x = 729,562,986.26
  5. Step 5: Solve for x
    x = 729,562,986.26/31,129.63
  6. Step 6: Final answer
    x = 23,436.29

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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.