Home / 21,148.80-31,671.36-14,202.24

Finding the Fourth Proportional to 21,148.80, 31,671.36 and 14,202.24

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Solution

The fourth proportional to 21,148.80, 31,671.36 and 14,202.24 is: 21,268.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,148.80 : 31,671.36 = 14,202.24 : x
  2. Step 2: Convert to fraction form
    21,148.80/31,671.36 = 14,202.24/x
  3. Step 3: Cross multiply
    21,148.80x = 31,671.36 × 14,202.24
  4. Step 4: Simplify right side
    21,148.80x = 449,804,255.85
  5. Step 5: Solve for x
    x = 449,804,255.85/21,148.80
  6. Step 6: Final answer
    x = 21,268.55

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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.