Home / 28,669.10-39,562.73-15,921.56

Finding the Fourth Proportional to 28,669.10, 39,562.73 and 15,921.56

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Solution

The fourth proportional to 28,669.10, 39,562.73 and 15,921.56 is: 21,971.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,669.10 : 39,562.73 = 15,921.56 : x
  2. Step 2: Convert to fraction form
    28,669.10/39,562.73 = 15,921.56/x
  3. Step 3: Cross multiply
    28,669.10x = 39,562.73 × 15,921.56
  4. Step 4: Simplify right side
    28,669.10x = 629,900,379.46
  5. Step 5: Solve for x
    x = 629,900,379.46/28,669.10
  6. Step 6: Final answer
    x = 21,971.40

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1.5x scale

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.