Home / 30,810.82-42,519.09-17,381.62

Finding the Fourth Proportional to 30,810.82, 42,519.09 and 17,381.62

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Solution

The fourth proportional to 30,810.82, 42,519.09 and 17,381.62 is: 23,986.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,810.82 : 42,519.09 = 17,381.62 : x
  2. Step 2: Convert to fraction form
    30,810.82/42,519.09 = 17,381.62/x
  3. Step 3: Cross multiply
    30,810.82x = 42,519.09 × 17,381.62
  4. Step 4: Simplify right side
    30,810.82x = 739,050,665.13
  5. Step 5: Solve for x
    x = 739,050,665.13/30,810.82
  6. Step 6: Final answer
    x = 23,986.72

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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.