Home / 31,122.86-42,948.24-16,975.70

Finding the Fourth Proportional to 31,122.86, 42,948.24 and 16,975.70

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Solution

The fourth proportional to 31,122.86, 42,948.24 and 16,975.70 is: 23,425.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,122.86 : 42,948.24 = 16,975.70 : x
  2. Step 2: Convert to fraction form
    31,122.86/42,948.24 = 16,975.70/x
  3. Step 3: Cross multiply
    31,122.86x = 42,948.24 × 16,975.70
  4. Step 4: Simplify right side
    31,122.86x = 729,076,223.03
  5. Step 5: Solve for x
    x = 729,076,223.03/31,122.86
  6. Step 6: Final answer
    x = 23,425.75

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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.