Home / 30,845.70-42,567.30-16,698.78

Finding the Fourth Proportional to 30,845.70, 42,567.30 and 16,698.78

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Solution

The fourth proportional to 30,845.70, 42,567.30 and 16,698.78 is: 23,044.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,845.70 : 42,567.30 = 16,698.78 : x
  2. Step 2: Convert to fraction form
    30,845.70/42,567.30 = 16,698.78/x
  3. Step 3: Cross multiply
    30,845.70x = 42,567.30 × 16,698.78
  4. Step 4: Simplify right side
    30,845.70x = 710,821,977.89
  5. Step 5: Solve for x
    x = 710,821,977.89/30,845.70
  6. Step 6: Final answer
    x = 23,044.44

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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.