Home / 28,290.15-42,410.12-14,231.79

Finding the Fourth Proportional to 28,290.15, 42,410.12 and 14,231.79

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Solution

The fourth proportional to 28,290.15, 42,410.12 and 14,231.79 is: 21,335.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,290.15 : 42,410.12 = 14,231.79 : x
  2. Step 2: Convert to fraction form
    28,290.15/42,410.12 = 14,231.79/x
  3. Step 3: Cross multiply
    28,290.15x = 42,410.12 × 14,231.79
  4. Step 4: Simplify right side
    28,290.15x = 603,571,850.56
  5. Step 5: Solve for x
    x = 603,571,850.56/28,290.15
  6. Step 6: Final answer
    x = 21,335.05

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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.