Home / 21,334.85-29,442.04-12,387.59

Finding the Fourth Proportional to 21,334.85, 29,442.04 and 12,387.59

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Solution

The fourth proportional to 21,334.85, 29,442.04 and 12,387.59 is: 17,094.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,334.85 : 29,442.04 = 12,387.59 : x
  2. Step 2: Convert to fraction form
    21,334.85/29,442.04 = 12,387.59/x
  3. Step 3: Cross multiply
    21,334.85x = 29,442.04 × 12,387.59
  4. Step 4: Simplify right side
    21,334.85x = 364,715,742.10
  5. Step 5: Solve for x
    x = 364,715,742.10/21,334.85
  6. Step 6: Final answer
    x = 17,094.84

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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.