Home / 21,042.22-29,041.04-13,386.24

Finding the Fourth Proportional to 21,042.22, 29,041.04 and 13,386.24

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Solution

The fourth proportional to 21,042.22, 29,041.04 and 13,386.24 is: 18,474.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,042.22 : 29,041.04 = 13,386.24 : x
  2. Step 2: Convert to fraction form
    21,042.22/29,041.04 = 13,386.24/x
  3. Step 3: Cross multiply
    21,042.22x = 29,041.04 × 13,386.24
  4. Step 4: Simplify right side
    21,042.22x = 388,750,331.29
  5. Step 5: Solve for x
    x = 388,750,331.29/21,042.22
  6. Step 6: Final answer
    x = 18,474.78

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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.