Home / 21,145.66-29,181.01-12,762.16

Finding the Fourth Proportional to 21,145.66, 29,181.01 and 12,762.16

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Solution

The fourth proportional to 21,145.66, 29,181.01 and 12,762.16 is: 17,611.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,145.66 : 29,181.01 = 12,762.16 : x
  2. Step 2: Convert to fraction form
    21,145.66/29,181.01 = 12,762.16/x
  3. Step 3: Cross multiply
    21,145.66x = 29,181.01 × 12,762.16
  4. Step 4: Simplify right side
    21,145.66x = 372,412,718.58
  5. Step 5: Solve for x
    x = 372,412,718.58/21,145.66
  6. Step 6: Final answer
    x = 17,611.78

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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.