Home / 31,133.36-42,964.28-16,986.32

Finding the Fourth Proportional to 31,133.36, 42,964.28 and 16,986.32

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Solution

The fourth proportional to 31,133.36, 42,964.28 and 16,986.32 is: 23,441.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,133.36 : 42,964.28 = 16,986.32 : x
  2. Step 2: Convert to fraction form
    31,133.36/42,964.28 = 16,986.32/x
  3. Step 3: Cross multiply
    31,133.36x = 42,964.28 × 16,986.32
  4. Step 4: Simplify right side
    31,133.36x = 729,805,008.65
  5. Step 5: Solve for x
    x = 729,805,008.65/31,133.36
  6. Step 6: Final answer
    x = 23,441.25

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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.