Home / 20,880.94-31,313.64-9,036.43

Finding the Fourth Proportional to 20,880.94, 31,313.64 and 9,036.43

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Solution

The fourth proportional to 20,880.94, 31,313.64 and 9,036.43 is: 13,551.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,880.94 : 31,313.64 = 9,036.43 : x
  2. Step 2: Convert to fraction form
    20,880.94/31,313.64 = 9,036.43/x
  3. Step 3: Cross multiply
    20,880.94x = 31,313.64 × 9,036.43
  4. Step 4: Simplify right side
    20,880.94x = 282,963,515.91
  5. Step 5: Solve for x
    x = 282,963,515.91/20,880.94
  6. Step 6: Final answer
    x = 13,551.28

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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.