Home / 30,414.40-41,970.24-16,985.60

Finding the Fourth Proportional to 30,414.40, 41,970.24 and 16,985.60

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Solution

The fourth proportional to 30,414.40, 41,970.24 and 16,985.60 is: 23,439.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,414.40 : 41,970.24 = 16,985.60 : x
  2. Step 2: Convert to fraction form
    30,414.40/41,970.24 = 16,985.60/x
  3. Step 3: Cross multiply
    30,414.40x = 41,970.24 × 16,985.60
  4. Step 4: Simplify right side
    30,414.40x = 712,889,708.54
  5. Step 5: Solve for x
    x = 712,889,708.54/30,414.40
  6. Step 6: Final answer
    x = 23,439.22

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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.