Home / 21,045.14-29,042.43-11,485.70

Finding the Fourth Proportional to 21,045.14, 29,042.43 and 11,485.70

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Solution

The fourth proportional to 21,045.14, 29,042.43 and 11,485.70 is: 15,850.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,045.14 : 29,042.43 = 11,485.70 : x
  2. Step 2: Convert to fraction form
    21,045.14/29,042.43 = 11,485.70/x
  3. Step 3: Cross multiply
    21,045.14x = 29,042.43 × 11,485.70
  4. Step 4: Simplify right side
    21,045.14x = 333,572,638.25
  5. Step 5: Solve for x
    x = 333,572,638.25/21,045.14
  6. Step 6: Final answer
    x = 15,850.34

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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.