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Finding the Fourth Proportional to 18,957.65, 28,499.04 and 13,450.46

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Solution

The fourth proportional to 18,957.65, 28,499.04 and 13,450.46 is: 20,220.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,957.65 : 28,499.04 = 13,450.46 : x
  2. Step 2: Convert to fraction form
    18,957.65/28,499.04 = 13,450.46/x
  3. Step 3: Cross multiply
    18,957.65x = 28,499.04 × 13,450.46
  4. Step 4: Simplify right side
    18,957.65x = 383,325,055.06
  5. Step 5: Solve for x
    x = 383,325,055.06/18,957.65
  6. Step 6: Final answer
    x = 20,220.08

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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.