Home / 30,912.05-42,658.65-16,764.89

Finding the Fourth Proportional to 30,912.05, 42,658.65 and 16,764.89

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Solution

The fourth proportional to 30,912.05, 42,658.65 and 16,764.89 is: 23,135.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,912.05 : 42,658.65 = 16,764.89 : x
  2. Step 2: Convert to fraction form
    30,912.05/42,658.65 = 16,764.89/x
  3. Step 3: Cross multiply
    30,912.05x = 42,658.65 × 16,764.89
  4. Step 4: Simplify right side
    30,912.05x = 715,167,361.51
  5. Step 5: Solve for x
    x = 715,167,361.51/30,912.05
  6. Step 6: Final answer
    x = 23,135.55

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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.