Home / 21,321.28-29,420.56-12,367.56

Finding the Fourth Proportional to 21,321.28, 29,420.56 and 12,367.56

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Solution

The fourth proportional to 21,321.28, 29,420.56 and 12,367.56 is: 17,065.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,321.28 : 29,420.56 = 12,367.56 : x
  2. Step 2: Convert to fraction form
    21,321.28/29,420.56 = 12,367.56/x
  3. Step 3: Cross multiply
    21,321.28x = 29,420.56 × 12,367.56
  4. Step 4: Simplify right side
    21,321.28x = 363,860,541.03
  5. Step 5: Solve for x
    x = 363,860,541.03/21,321.28
  6. Step 6: Final answer
    x = 17,065.60

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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.