Home / 18,918.69-28,348.61-7,225.53

Finding the Fourth Proportional to 18,918.69, 28,348.61 and 7,225.53

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Solution

The fourth proportional to 18,918.69, 28,348.61 and 7,225.53 is: 10,827.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,918.69 : 28,348.61 = 7,225.53 : x
  2. Step 2: Convert to fraction form
    18,918.69/28,348.61 = 7,225.53/x
  3. Step 3: Cross multiply
    18,918.69x = 28,348.61 × 7,225.53
  4. Step 4: Simplify right side
    18,918.69x = 204,833,695.89
  5. Step 5: Solve for x
    x = 204,833,695.89/18,918.69
  6. Step 6: Final answer
    x = 10,827.05

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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.