Home / 21,072.96-29,079.78-11,641.32

Finding the Fourth Proportional to 21,072.96, 29,079.78 and 11,641.32

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Solution

The fourth proportional to 21,072.96, 29,079.78 and 11,641.32 is: 16,064.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,072.96 : 29,079.78 = 11,641.32 : x
  2. Step 2: Convert to fraction form
    21,072.96/29,079.78 = 11,641.32/x
  3. Step 3: Cross multiply
    21,072.96x = 29,079.78 × 11,641.32
  4. Step 4: Simplify right side
    21,072.96x = 338,527,024.51
  5. Step 5: Solve for x
    x = 338,527,024.51/21,072.96
  6. Step 6: Final answer
    x = 16,064.52

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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.