Home / 21,259.68-31,845.60-12,468.12

Finding the Fourth Proportional to 21,259.68, 31,845.60 and 12,468.12

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Solution

The fourth proportional to 21,259.68, 31,845.60 and 12,468.12 is: 18,676.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,259.68 : 31,845.60 = 12,468.12 : x
  2. Step 2: Convert to fraction form
    21,259.68/31,845.60 = 12,468.12/x
  3. Step 3: Cross multiply
    21,259.68x = 31,845.60 × 12,468.12
  4. Step 4: Simplify right side
    21,259.68x = 397,054,762.27
  5. Step 5: Solve for x
    x = 397,054,762.27/21,259.68
  6. Step 6: Final answer
    x = 18,676.42

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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.