Home / 21,325.88-29,426.34-12,825.96

Finding the Fourth Proportional to 21,325.88, 29,426.34 and 12,825.96

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Solution

The fourth proportional to 21,325.88, 29,426.34 and 12,825.96 is: 17,697.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325.88 : 29,426.34 = 12,825.96 : x
  2. Step 2: Convert to fraction form
    21,325.88/29,426.34 = 12,825.96/x
  3. Step 3: Cross multiply
    21,325.88x = 29,426.34 × 12,825.96
  4. Step 4: Simplify right side
    21,325.88x = 377,421,059.79
  5. Step 5: Solve for x
    x = 377,421,059.79/21,325.88
  6. Step 6: Final answer
    x = 17,697.80

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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.