Home / 21,127.56-29,155.96-12,175.44

Finding the Fourth Proportional to 21,127.56, 29,155.96 and 12,175.44

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Solution

The fourth proportional to 21,127.56, 29,155.96 and 12,175.44 is: 16,802.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,127.56 : 29,155.96 = 12,175.44 : x
  2. Step 2: Convert to fraction form
    21,127.56/29,155.96 = 12,175.44/x
  3. Step 3: Cross multiply
    21,127.56x = 29,155.96 × 12,175.44
  4. Step 4: Simplify right side
    21,127.56x = 354,986,641.62
  5. Step 5: Solve for x
    x = 354,986,641.62/21,127.56
  6. Step 6: Final answer
    x = 16,802.07

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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.