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Finding the Fourth Proportional to 18,703.69, 28,055.53 and 7,008.71

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Solution

The fourth proportional to 18,703.69, 28,055.53 and 7,008.71 is: 10,513.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,703.69 : 28,055.53 = 7,008.71 : x
  2. Step 2: Convert to fraction form
    18,703.69/28,055.53 = 7,008.71/x
  3. Step 3: Cross multiply
    18,703.69x = 28,055.53 × 7,008.71
  4. Step 4: Simplify right side
    18,703.69x = 196,632,942.15
  5. Step 5: Solve for x
    x = 196,632,942.15/18,703.69
  6. Step 6: Final answer
    x = 10,513.06

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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.