Home / 20,922.78-31,257.74-13,466.46

Finding the Fourth Proportional to 20,922.78, 31,257.74 and 13,466.46

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Solution

The fourth proportional to 20,922.78, 31,257.74 and 13,466.46 is: 20,118.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,922.78 : 31,257.74 = 13,466.46 : x
  2. Step 2: Convert to fraction form
    20,922.78/31,257.74 = 13,466.46/x
  3. Step 3: Cross multiply
    20,922.78x = 31,257.74 × 13,466.46
  4. Step 4: Simplify right side
    20,922.78x = 420,931,038.07
  5. Step 5: Solve for x
    x = 420,931,038.07/20,922.78
  6. Step 6: Final answer
    x = 20,118.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.