Home / 30,615.21-42,246.70-17,188.52

Finding the Fourth Proportional to 30,615.21, 42,246.70 and 17,188.52

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Solution

The fourth proportional to 30,615.21, 42,246.70 and 17,188.52 is: 23,718.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,615.21 : 42,246.70 = 17,188.52 : x
  2. Step 2: Convert to fraction form
    30,615.21/42,246.70 = 17,188.52/x
  3. Step 3: Cross multiply
    30,615.21x = 42,246.70 × 17,188.52
  4. Step 4: Simplify right side
    30,615.21x = 726,157,993.68
  5. Step 5: Solve for x
    x = 726,157,993.68/30,615.21
  6. Step 6: Final answer
    x = 23,718.86

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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.