Home / 31,215.20-46,725.60-18,028.40

Finding the Fourth Proportional to 31,215.20, 46,725.60 and 18,028.40

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Solution

The fourth proportional to 31,215.20, 46,725.60 and 18,028.40 is: 26,986.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,215.20 : 46,725.60 = 18,028.40 : x
  2. Step 2: Convert to fraction form
    31,215.20/46,725.60 = 18,028.40/x
  3. Step 3: Cross multiply
    31,215.20x = 46,725.60 × 18,028.40
  4. Step 4: Simplify right side
    31,215.20x = 842,387,807.04
  5. Step 5: Solve for x
    x = 842,387,807.04/31,215.20
  6. Step 6: Final answer
    x = 26,986.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.