Home / 18,961.23-28,445.16-6,478.32

Finding the Fourth Proportional to 18,961.23, 28,445.16 and 6,478.32

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Solution

The fourth proportional to 18,961.23, 28,445.16 and 6,478.32 is: 9,718.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,961.23 : 28,445.16 = 6,478.32 : x
  2. Step 2: Convert to fraction form
    18,961.23/28,445.16 = 6,478.32/x
  3. Step 3: Cross multiply
    18,961.23x = 28,445.16 × 6,478.32
  4. Step 4: Simplify right side
    18,961.23x = 184,276,848.93
  5. Step 5: Solve for x
    x = 184,276,848.93/18,961.23
  6. Step 6: Final answer
    x = 9,718.61

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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.