Home / 21,045.89-29,042.42-11,485.53

Finding the Fourth Proportional to 21,045.89, 29,042.42 and 11,485.53

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Solution

The fourth proportional to 21,045.89, 29,042.42 and 11,485.53 is: 15,849.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,045.89 : 29,042.42 = 11,485.53 : x
  2. Step 2: Convert to fraction form
    21,045.89/29,042.42 = 11,485.53/x
  3. Step 3: Cross multiply
    21,045.89x = 29,042.42 × 11,485.53
  4. Step 4: Simplify right side
    21,045.89x = 333,567,528.75
  5. Step 5: Solve for x
    x = 333,567,528.75/21,045.89
  6. Step 6: Final answer
    x = 15,849.54

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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.