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Finding the Fourth Proportional to 18,957.07, 28,440.64 and 6,477.07

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Solution

The fourth proportional to 18,957.07, 28,440.64 and 6,477.07 is: 9,717.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,957.07 : 28,440.64 = 6,477.07 : x
  2. Step 2: Convert to fraction form
    18,957.07/28,440.64 = 6,477.07/x
  3. Step 3: Cross multiply
    18,957.07x = 28,440.64 × 6,477.07
  4. Step 4: Simplify right side
    18,957.07x = 184,212,016.12
  5. Step 5: Solve for x
    x = 184,212,016.12/18,957.07
  6. Step 6: Final answer
    x = 9,717.33

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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.