Home / 30,740.82-42,418.80-17,311.74

Finding the Fourth Proportional to 30,740.82, 42,418.80 and 17,311.74

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Solution

The fourth proportional to 30,740.82, 42,418.80 and 17,311.74 is: 23,888.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,740.82 : 42,418.80 = 17,311.74 : x
  2. Step 2: Convert to fraction form
    30,740.82/42,418.80 = 17,311.74/x
  3. Step 3: Cross multiply
    30,740.82x = 42,418.80 × 17,311.74
  4. Step 4: Simplify right side
    30,740.82x = 734,343,236.71
  5. Step 5: Solve for x
    x = 734,343,236.71/30,740.82
  6. Step 6: Final answer
    x = 23,888.21

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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.