Home / 21,015.24-29,014.54-13,068.28

Finding the Fourth Proportional to 21,015.24, 29,014.54 and 13,068.28

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Solution

The fourth proportional to 21,015.24, 29,014.54 and 13,068.28 is: 18,042.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,015.24 : 29,014.54 = 13,068.28 : x
  2. Step 2: Convert to fraction form
    21,015.24/29,014.54 = 13,068.28/x
  3. Step 3: Cross multiply
    21,015.24x = 29,014.54 × 13,068.28
  4. Step 4: Simplify right side
    21,015.24x = 379,170,132.79
  5. Step 5: Solve for x
    x = 379,170,132.79/21,015.24
  6. Step 6: Final answer
    x = 18,042.63

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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.