Home / 18,968.04-28,451.88-7,289.40

Finding the Fourth Proportional to 18,968.04, 28,451.88 and 7,289.40

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Solution

The fourth proportional to 18,968.04, 28,451.88 and 7,289.40 is: 10,934.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,968.04 : 28,451.88 = 7,289.40 : x
  2. Step 2: Convert to fraction form
    18,968.04/28,451.88 = 7,289.40/x
  3. Step 3: Cross multiply
    18,968.04x = 28,451.88 × 7,289.40
  4. Step 4: Simplify right side
    18,968.04x = 207,397,134.07
  5. Step 5: Solve for x
    x = 207,397,134.07/18,968.04
  6. Step 6: Final answer
    x = 10,934.03

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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.