Home / 28,242-38,973.96-15,666.84

Finding the Fourth Proportional to 28,242, 38,973.96 and 15,666.84

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Solution

The fourth proportional to 28,242, 38,973.96 and 15,666.84 is: 21,620.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,242 : 38,973.96 = 15,666.84 : x
  2. Step 2: Convert to fraction form
    28,242/38,973.96 = 15,666.84/x
  3. Step 3: Cross multiply
    28,242x = 38,973.96 × 15,666.84
  4. Step 4: Simplify right side
    28,242x = 610,598,795.49
  5. Step 5: Solve for x
    x = 610,598,795.49/28,242
  6. Step 6: Final answer
    x = 21,620.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.