Home / 15,629.72-21,570.48-9,341.96

Finding the Fourth Proportional to 15,629.72, 21,570.48 and 9,341.96

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Solution

The fourth proportional to 15,629.72, 21,570.48 and 9,341.96 is: 12,892.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,629.72 : 21,570.48 = 9,341.96 : x
  2. Step 2: Convert to fraction form
    15,629.72/21,570.48 = 9,341.96/x
  3. Step 3: Cross multiply
    15,629.72x = 21,570.48 × 9,341.96
  4. Step 4: Simplify right side
    15,629.72x = 201,510,561.34
  5. Step 5: Solve for x
    x = 201,510,561.34/15,629.72
  6. Step 6: Final answer
    x = 12,892.78

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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.