Home / 30,985.37-42,760.19-16,838.45

Finding the Fourth Proportional to 30,985.37, 42,760.19 and 16,838.45

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Solution

The fourth proportional to 30,985.37, 42,760.19 and 16,838.45 is: 23,237.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,985.37 : 42,760.19 = 16,838.45 : x
  2. Step 2: Convert to fraction form
    30,985.37/42,760.19 = 16,838.45/x
  3. Step 3: Cross multiply
    30,985.37x = 42,760.19 × 16,838.45
  4. Step 4: Simplify right side
    30,985.37x = 720,015,321.31
  5. Step 5: Solve for x
    x = 720,015,321.31/30,985.37
  6. Step 6: Final answer
    x = 23,237.27

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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.