Home / 31,122.39-42,949.14-16,975.35

Finding the Fourth Proportional to 31,122.39, 42,949.14 and 16,975.35

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Solution

The fourth proportional to 31,122.39, 42,949.14 and 16,975.35 is: 23,426.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,122.39 : 42,949.14 = 16,975.35 : x
  2. Step 2: Convert to fraction form
    31,122.39/42,949.14 = 16,975.35/x
  3. Step 3: Cross multiply
    31,122.39x = 42,949.14 × 16,975.35
  4. Step 4: Simplify right side
    31,122.39x = 729,076,683.70
  5. Step 5: Solve for x
    x = 729,076,683.70/31,122.39
  6. Step 6: Final answer
    x = 23,426.11

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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.