Home / 30,890.58-42,627.84-16,743.12

Finding the Fourth Proportional to 30,890.58, 42,627.84 and 16,743.12

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Solution

The fourth proportional to 30,890.58, 42,627.84 and 16,743.12 is: 23,104.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,890.58 : 42,627.84 = 16,743.12 : x
  2. Step 2: Convert to fraction form
    30,890.58/42,627.84 = 16,743.12/x
  3. Step 3: Cross multiply
    30,890.58x = 42,627.84 × 16,743.12
  4. Step 4: Simplify right side
    30,890.58x = 713,723,040.46
  5. Step 5: Solve for x
    x = 713,723,040.46/30,890.58
  6. Step 6: Final answer
    x = 23,104.88

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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.