Home / 28,386.96-42,580.44-9,914.64

Finding the Fourth Proportional to 28,386.96, 42,580.44 and 9,914.64

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Solution

The fourth proportional to 28,386.96, 42,580.44 and 9,914.64 is: 14,871.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,386.96 : 42,580.44 = 9,914.64 : x
  2. Step 2: Convert to fraction form
    28,386.96/42,580.44 = 9,914.64/x
  3. Step 3: Cross multiply
    28,386.96x = 42,580.44 × 9,914.64
  4. Step 4: Simplify right side
    28,386.96x = 422,169,733.64
  5. Step 5: Solve for x
    x = 422,169,733.64/28,386.96
  6. Step 6: Final answer
    x = 14,871.96

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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.