Home / 31,283.20-43,166.72-18,703.36

Finding the Fourth Proportional to 31,283.20, 43,166.72 and 18,703.36

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Solution

The fourth proportional to 31,283.20, 43,166.72 and 18,703.36 is: 25,808.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,283.20 : 43,166.72 = 18,703.36 : x
  2. Step 2: Convert to fraction form
    31,283.20/43,166.72 = 18,703.36/x
  3. Step 3: Cross multiply
    31,283.20x = 43,166.72 × 18,703.36
  4. Step 4: Simplify right side
    31,283.20x = 807,362,704.18
  5. Step 5: Solve for x
    x = 807,362,704.18/31,283.20
  6. Step 6: Final answer
    x = 25,808.19

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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.