Home / 21,055.82-29,050.06-13,889.30

Finding the Fourth Proportional to 21,055.82, 29,050.06 and 13,889.30

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Solution

The fourth proportional to 21,055.82, 29,050.06 and 13,889.30 is: 19,162.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,055.82 : 29,050.06 = 13,889.30 : x
  2. Step 2: Convert to fraction form
    21,055.82/29,050.06 = 13,889.30/x
  3. Step 3: Cross multiply
    21,055.82x = 29,050.06 × 13,889.30
  4. Step 4: Simplify right side
    21,055.82x = 403,484,998.36
  5. Step 5: Solve for x
    x = 403,484,998.36/21,055.82
  6. Step 6: Final answer
    x = 19,162.64

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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.