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Finding the Fourth Proportional to 13,021.38, 17,969.48 and 7,053.06

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Solution

The fourth proportional to 13,021.38, 17,969.48 and 7,053.06 is: 9,733.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,021.38 : 17,969.48 = 7,053.06 : x
  2. Step 2: Convert to fraction form
    13,021.38/17,969.48 = 7,053.06/x
  3. Step 3: Cross multiply
    13,021.38x = 17,969.48 × 7,053.06
  4. Step 4: Simplify right side
    13,021.38x = 126,739,820.61
  5. Step 5: Solve for x
    x = 126,739,820.61/13,021.38
  6. Step 6: Final answer
    x = 9,733.21

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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.