Home / 21,290.32-31,902.63-13,482.73

Finding the Fourth Proportional to 21,290.32, 31,902.63 and 13,482.73

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Solution

The fourth proportional to 21,290.32, 31,902.63 and 13,482.73 is: 20,203.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,290.32 : 31,902.63 = 13,482.73 : x
  2. Step 2: Convert to fraction form
    21,290.32/31,902.63 = 13,482.73/x
  3. Step 3: Cross multiply
    21,290.32x = 31,902.63 × 13,482.73
  4. Step 4: Simplify right side
    21,290.32x = 430,134,546.58
  5. Step 5: Solve for x
    x = 430,134,546.58/21,290.32
  6. Step 6: Final answer
    x = 20,203.29

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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.