Home / 30,939.52-42,696.60-16,792.42

Finding the Fourth Proportional to 30,939.52, 42,696.60 and 16,792.42

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Solution

The fourth proportional to 30,939.52, 42,696.60 and 16,792.42 is: 23,173.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,939.52 : 42,696.60 = 16,792.42 : x
  2. Step 2: Convert to fraction form
    30,939.52/42,696.60 = 16,792.42/x
  3. Step 3: Cross multiply
    30,939.52x = 42,696.60 × 16,792.42
  4. Step 4: Simplify right side
    30,939.52x = 716,979,239.77
  5. Step 5: Solve for x
    x = 716,979,239.77/30,939.52
  6. Step 6: Final answer
    x = 23,173.57

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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.