Home / 21,060.26-29,076.81-13,105.70

Finding the Fourth Proportional to 21,060.26, 29,076.81 and 13,105.70

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Solution

The fourth proportional to 21,060.26, 29,076.81 and 13,105.70 is: 18,094.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,060.26 : 29,076.81 = 13,105.70 : x
  2. Step 2: Convert to fraction form
    21,060.26/29,076.81 = 13,105.70/x
  3. Step 3: Cross multiply
    21,060.26x = 29,076.81 × 13,105.70
  4. Step 4: Simplify right side
    21,060.26x = 381,071,948.82
  5. Step 5: Solve for x
    x = 381,071,948.82/21,060.26
  6. Step 6: Final answer
    x = 18,094.36

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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.