Home / 21,042.36-29,048.96-13,087.15

Finding the Fourth Proportional to 21,042.36, 29,048.96 and 13,087.15

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Solution

The fourth proportional to 21,042.36, 29,048.96 and 13,087.15 is: 18,066.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,042.36 : 29,048.96 = 13,087.15 : x
  2. Step 2: Convert to fraction form
    21,042.36/29,048.96 = 13,087.15/x
  3. Step 3: Cross multiply
    21,042.36x = 29,048.96 × 13,087.15
  4. Step 4: Simplify right side
    21,042.36x = 380,168,056.96
  5. Step 5: Solve for x
    x = 380,168,056.96/21,042.36
  6. Step 6: Final answer
    x = 18,066.80

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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.