Home / 20,621.61-28,464.66-14,670.54

Finding the Fourth Proportional to 20,621.61, 28,464.66 and 14,670.54

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Solution

The fourth proportional to 20,621.61, 28,464.66 and 14,670.54 is: 20,250.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,621.61 : 28,464.66 = 14,670.54 : x
  2. Step 2: Convert to fraction form
    20,621.61/28,464.66 = 14,670.54/x
  3. Step 3: Cross multiply
    20,621.61x = 28,464.66 × 14,670.54
  4. Step 4: Simplify right side
    20,621.61x = 417,591,933.12
  5. Step 5: Solve for x
    x = 417,591,933.12/20,621.61
  6. Step 6: Final answer
    x = 20,250.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.