Home / 30,839.34-42,559.12-18,735.70

Finding the Fourth Proportional to 30,839.34, 42,559.12 and 18,735.70

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Solution

The fourth proportional to 30,839.34, 42,559.12 and 18,735.70 is: 25,855.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,839.34 : 42,559.12 = 18,735.70 : x
  2. Step 2: Convert to fraction form
    30,839.34/42,559.12 = 18,735.70/x
  3. Step 3: Cross multiply
    30,839.34x = 42,559.12 × 18,735.70
  4. Step 4: Simplify right side
    30,839.34x = 797,374,704.51
  5. Step 5: Solve for x
    x = 797,374,704.51/30,839.34
  6. Step 6: Final answer
    x = 25,855.77

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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.