Home / 20,485.32-28,260.60-16,724.02

Finding the Fourth Proportional to 20,485.32, 28,260.60 and 16,724.02

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Solution

The fourth proportional to 20,485.32, 28,260.60 and 16,724.02 is: 23,071.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,485.32 : 28,260.60 = 16,724.02 : x
  2. Step 2: Convert to fraction form
    20,485.32/28,260.60 = 16,724.02/x
  3. Step 3: Cross multiply
    20,485.32x = 28,260.60 × 16,724.02
  4. Step 4: Simplify right side
    20,485.32x = 472,630,839.61
  5. Step 5: Solve for x
    x = 472,630,839.61/20,485.32
  6. Step 6: Final answer
    x = 23,071.68

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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.