Home / 21,083.42-31,630.32-14,855.60

Finding the Fourth Proportional to 21,083.42, 31,630.32 and 14,855.60

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Solution

The fourth proportional to 21,083.42, 31,630.32 and 14,855.60 is: 22,287.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,083.42 : 31,630.32 = 14,855.60 : x
  2. Step 2: Convert to fraction form
    21,083.42/31,630.32 = 14,855.60/x
  3. Step 3: Cross multiply
    21,083.42x = 31,630.32 × 14,855.60
  4. Step 4: Simplify right side
    21,083.42x = 469,887,219.26
  5. Step 5: Solve for x
    x = 469,887,219.26/21,083.42
  6. Step 6: Final answer
    x = 22,287.05

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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.