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Finding the Fourth Proportional to 18,709.99, 28,050.37 and 9,345.29

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Solution

The fourth proportional to 18,709.99, 28,050.37 and 9,345.29 is: 14,010.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,709.99 : 28,050.37 = 9,345.29 : x
  2. Step 2: Convert to fraction form
    18,709.99/28,050.37 = 9,345.29/x
  3. Step 3: Cross multiply
    18,709.99x = 28,050.37 × 9,345.29
  4. Step 4: Simplify right side
    18,709.99x = 262,138,678.64
  5. Step 5: Solve for x
    x = 262,138,678.64/18,709.99
  6. Step 6: Final answer
    x = 14,010.63

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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.