Home / 30,758.13-42,449.36-18,829.35

Finding the Fourth Proportional to 30,758.13, 42,449.36 and 18,829.35

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Solution

The fourth proportional to 30,758.13, 42,449.36 and 18,829.35 is: 25,986.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,758.13 : 42,449.36 = 18,829.35 : x
  2. Step 2: Convert to fraction form
    30,758.13/42,449.36 = 18,829.35/x
  3. Step 3: Cross multiply
    30,758.13x = 42,449.36 × 18,829.35
  4. Step 4: Simplify right side
    30,758.13x = 799,293,762.57
  5. Step 5: Solve for x
    x = 799,293,762.57/30,758.13
  6. Step 6: Final answer
    x = 25,986.42

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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.