Home / 21,359.56-29,467.02-12,400.60

Finding the Fourth Proportional to 21,359.56, 29,467.02 and 12,400.60

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Solution

The fourth proportional to 21,359.56, 29,467.02 and 12,400.60 is: 17,107.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,359.56 : 29,467.02 = 12,400.60 : x
  2. Step 2: Convert to fraction form
    21,359.56/29,467.02 = 12,400.60/x
  3. Step 3: Cross multiply
    21,359.56x = 29,467.02 × 12,400.60
  4. Step 4: Simplify right side
    21,359.56x = 365,408,728.21
  5. Step 5: Solve for x
    x = 365,408,728.21/21,359.56
  6. Step 6: Final answer
    x = 17,107.50

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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.