Home / 31,122.96-42,949.63-16,975.81

Finding the Fourth Proportional to 31,122.96, 42,949.63 and 16,975.81

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Solution

The fourth proportional to 31,122.96, 42,949.63 and 16,975.81 is: 23,426.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,122.96 : 42,949.63 = 16,975.81 : x
  2. Step 2: Convert to fraction form
    31,122.96/42,949.63 = 16,975.81/x
  3. Step 3: Cross multiply
    31,122.96x = 42,949.63 × 16,975.81
  4. Step 4: Simplify right side
    31,122.96x = 729,104,758.45
  5. Step 5: Solve for x
    x = 729,104,758.45/31,122.96
  6. Step 6: Final answer
    x = 23,426.59

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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.