Home / 30,905.85-42,650.04-16,758.70

Finding the Fourth Proportional to 30,905.85, 42,650.04 and 16,758.70

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Solution

The fourth proportional to 30,905.85, 42,650.04 and 16,758.70 is: 23,126.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,905.85 : 42,650.04 = 16,758.70 : x
  2. Step 2: Convert to fraction form
    30,905.85/42,650.04 = 16,758.70/x
  3. Step 3: Cross multiply
    30,905.85x = 42,650.04 × 16,758.70
  4. Step 4: Simplify right side
    30,905.85x = 714,759,181.57
  5. Step 5: Solve for x
    x = 714,759,181.57/30,905.85
  6. Step 6: Final answer
    x = 23,126.98

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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.