Home / 21,234.32-29,298.72-12,850.64

Finding the Fourth Proportional to 21,234.32, 29,298.72 and 12,850.64

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Solution

The fourth proportional to 21,234.32, 29,298.72 and 12,850.64 is: 17,731.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,234.32 : 29,298.72 = 12,850.64 : x
  2. Step 2: Convert to fraction form
    21,234.32/29,298.72 = 12,850.64/x
  3. Step 3: Cross multiply
    21,234.32x = 29,298.72 × 12,850.64
  4. Step 4: Simplify right side
    21,234.32x = 376,507,303.18
  5. Step 5: Solve for x
    x = 376,507,303.18/21,234.32
  6. Step 6: Final answer
    x = 17,731.07

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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.