Home / 30,910.95-42,657.30-16,763.76

Finding the Fourth Proportional to 30,910.95, 42,657.30 and 16,763.76

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Solution

The fourth proportional to 30,910.95, 42,657.30 and 16,763.76 is: 23,134.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,910.95 : 42,657.30 = 16,763.76 : x
  2. Step 2: Convert to fraction form
    30,910.95/42,657.30 = 16,763.76/x
  3. Step 3: Cross multiply
    30,910.95x = 42,657.30 × 16,763.76
  4. Step 4: Simplify right side
    30,910.95x = 715,096,739.45
  5. Step 5: Solve for x
    x = 715,096,739.45/30,910.95
  6. Step 6: Final answer
    x = 23,134.09

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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.