Home / 30,537.19-42,146.49-18,271.90

Finding the Fourth Proportional to 30,537.19, 42,146.49 and 18,271.90

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Solution

The fourth proportional to 30,537.19, 42,146.49 and 18,271.90 is: 25,218.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,537.19 : 42,146.49 = 18,271.90 : x
  2. Step 2: Convert to fraction form
    30,537.19/42,146.49 = 18,271.90/x
  3. Step 3: Cross multiply
    30,537.19x = 42,146.49 × 18,271.90
  4. Step 4: Simplify right side
    30,537.19x = 770,096,450.63
  5. Step 5: Solve for x
    x = 770,096,450.63/30,537.19
  6. Step 6: Final answer
    x = 25,218.31

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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.