Home / 28,268.31-42,421.91-9,800.31

Finding the Fourth Proportional to 28,268.31, 42,421.91 and 9,800.31

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Solution

The fourth proportional to 28,268.31, 42,421.91 and 9,800.31 is: 14,707.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,268.31 : 42,421.91 = 9,800.31 : x
  2. Step 2: Convert to fraction form
    28,268.31/42,421.91 = 9,800.31/x
  3. Step 3: Cross multiply
    28,268.31x = 42,421.91 × 9,800.31
  4. Step 4: Simplify right side
    28,268.31x = 415,747,868.79
  5. Step 5: Solve for x
    x = 415,747,868.79/28,268.31
  6. Step 6: Final answer
    x = 14,707.21

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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.