Home / 28,475.34-42,720.03-11,830.38

Finding the Fourth Proportional to 28,475.34, 42,720.03 and 11,830.38

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Solution

The fourth proportional to 28,475.34, 42,720.03 and 11,830.38 is: 17,748.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,475.34 : 42,720.03 = 11,830.38 : x
  2. Step 2: Convert to fraction form
    28,475.34/42,720.03 = 11,830.38/x
  3. Step 3: Cross multiply
    28,475.34x = 42,720.03 × 11,830.38
  4. Step 4: Simplify right side
    28,475.34x = 505,394,188.51
  5. Step 5: Solve for x
    x = 505,394,188.51/28,475.34
  6. Step 6: Final answer
    x = 17,748.49

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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.