Home / 20,735.55-31,078.71-11,952.32

Finding the Fourth Proportional to 20,735.55, 31,078.71 and 11,952.32

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Solution

The fourth proportional to 20,735.55, 31,078.71 and 11,952.32 is: 17,914.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,735.55 : 31,078.71 = 11,952.32 : x
  2. Step 2: Convert to fraction form
    20,735.55/31,078.71 = 11,952.32/x
  3. Step 3: Cross multiply
    20,735.55x = 31,078.71 × 11,952.32
  4. Step 4: Simplify right side
    20,735.55x = 371,462,531.71
  5. Step 5: Solve for x
    x = 371,462,531.71/20,735.55
  6. Step 6: Final answer
    x = 17,914.28

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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.