Home / 30,968.45-42,740.15-18,393.23

Finding the Fourth Proportional to 30,968.45, 42,740.15 and 18,393.23

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Solution

The fourth proportional to 30,968.45, 42,740.15 and 18,393.23 is: 25,384.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,968.45 : 42,740.15 = 18,393.23 : x
  2. Step 2: Convert to fraction form
    30,968.45/42,740.15 = 18,393.23/x
  3. Step 3: Cross multiply
    30,968.45x = 42,740.15 × 18,393.23
  4. Step 4: Simplify right side
    30,968.45x = 786,129,317.22
  5. Step 5: Solve for x
    x = 786,129,317.22/30,968.45
  6. Step 6: Final answer
    x = 25,384.85

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Similar ratio
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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.