Home / 28,231.40-42,327.12-14,181.32

Finding the Fourth Proportional to 28,231.40, 42,327.12 and 14,181.32

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Solution

The fourth proportional to 28,231.40, 42,327.12 and 14,181.32 is: 21,261.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,231.40 : 42,327.12 = 14,181.32 : x
  2. Step 2: Convert to fraction form
    28,231.40/42,327.12 = 14,181.32/x
  3. Step 3: Cross multiply
    28,231.40x = 42,327.12 × 14,181.32
  4. Step 4: Simplify right side
    28,231.40x = 600,254,433.40
  5. Step 5: Solve for x
    x = 600,254,433.40/28,231.40
  6. Step 6: Final answer
    x = 21,261.94

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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.