Home / 21,353.58-29,468.64-12,400.54

Finding the Fourth Proportional to 21,353.58, 29,468.64 and 12,400.54

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Solution

The fourth proportional to 21,353.58, 29,468.64 and 12,400.54 is: 17,113.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,353.58 : 29,468.64 = 12,400.54 : x
  2. Step 2: Convert to fraction form
    21,353.58/29,468.64 = 12,400.54/x
  3. Step 3: Cross multiply
    21,353.58x = 29,468.64 × 12,400.54
  4. Step 4: Simplify right side
    21,353.58x = 365,427,049.07
  5. Step 5: Solve for x
    x = 365,427,049.07/21,353.58
  6. Step 6: Final answer
    x = 17,113.15

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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.