Home / 28,918.10-43,355.55-15,785.30

Finding the Fourth Proportional to 28,918.10, 43,355.55 and 15,785.30

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Solution

The fourth proportional to 28,918.10, 43,355.55 and 15,785.30 is: 23,666.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,918.10 : 43,355.55 = 15,785.30 : x
  2. Step 2: Convert to fraction form
    28,918.10/43,355.55 = 15,785.30/x
  3. Step 3: Cross multiply
    28,918.10x = 43,355.55 × 15,785.30
  4. Step 4: Simplify right side
    28,918.10x = 684,380,363.42
  5. Step 5: Solve for x
    x = 684,380,363.42/28,918.10
  6. Step 6: Final answer
    x = 23,666.16

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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.