Home / 20,657.44-28,516.08-12,276.64

Finding the Fourth Proportional to 20,657.44, 28,516.08 and 12,276.64

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Solution

The fourth proportional to 20,657.44, 28,516.08 and 12,276.64 is: 16,947.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,657.44 : 28,516.08 = 12,276.64 : x
  2. Step 2: Convert to fraction form
    20,657.44/28,516.08 = 12,276.64/x
  3. Step 3: Cross multiply
    20,657.44x = 28,516.08 × 12,276.64
  4. Step 4: Simplify right side
    20,657.44x = 350,081,648.37
  5. Step 5: Solve for x
    x = 350,081,648.37/20,657.44
  6. Step 6: Final answer
    x = 16,947.00

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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.