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Finding the Fourth Proportional to 18,907.48, 28,318.02 and 9,053.68

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Solution

The fourth proportional to 18,907.48, 28,318.02 and 9,053.68 is: 13,559.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,907.48 : 28,318.02 = 9,053.68 : x
  2. Step 2: Convert to fraction form
    18,907.48/28,318.02 = 9,053.68/x
  3. Step 3: Cross multiply
    18,907.48x = 28,318.02 × 9,053.68
  4. Step 4: Simplify right side
    18,907.48x = 256,382,291.31
  5. Step 5: Solve for x
    x = 256,382,291.31/18,907.48
  6. Step 6: Final answer
    x = 13,559.83

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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.