Home / 28,025.66-42,003.46-13,989.71

Finding the Fourth Proportional to 28,025.66, 42,003.46 and 13,989.71

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Solution

The fourth proportional to 28,025.66, 42,003.46 and 13,989.71 is: 20,967.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,025.66 : 42,003.46 = 13,989.71 : x
  2. Step 2: Convert to fraction form
    28,025.66/42,003.46 = 13,989.71/x
  3. Step 3: Cross multiply
    28,025.66x = 42,003.46 × 13,989.71
  4. Step 4: Simplify right side
    28,025.66x = 587,616,346.89
  5. Step 5: Solve for x
    x = 587,616,346.89/28,025.66
  6. Step 6: Final answer
    x = 20,967.08

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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.