Home / 31,103.28-42,921.44-16,955.84

Finding the Fourth Proportional to 31,103.28, 42,921.44 and 16,955.84

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Solution

The fourth proportional to 31,103.28, 42,921.44 and 16,955.84 is: 23,398.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,103.28 : 42,921.44 = 16,955.84 : x
  2. Step 2: Convert to fraction form
    31,103.28/42,921.44 = 16,955.84/x
  3. Step 3: Cross multiply
    31,103.28x = 42,921.44 × 16,955.84
  4. Step 4: Simplify right side
    31,103.28x = 727,769,069.21
  5. Step 5: Solve for x
    x = 727,769,069.21/31,103.28
  6. Step 6: Final answer
    x = 23,398.47

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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.