Home / 28,828.05-43,243.43-9,108.20

Finding the Fourth Proportional to 28,828.05, 43,243.43 and 9,108.20

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Solution

The fourth proportional to 28,828.05, 43,243.43 and 9,108.20 is: 13,662.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,828.05 : 43,243.43 = 9,108.20 : x
  2. Step 2: Convert to fraction form
    28,828.05/43,243.43 = 9,108.20/x
  3. Step 3: Cross multiply
    28,828.05x = 43,243.43 × 9,108.20
  4. Step 4: Simplify right side
    28,828.05x = 393,869,547.37
  5. Step 5: Solve for x
    x = 393,869,547.37/28,828.05
  6. Step 6: Final answer
    x = 13,662.72

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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.