Home / 21,348.18-29,459.88-12,396.42

Finding the Fourth Proportional to 21,348.18, 29,459.88 and 12,396.42

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Solution

The fourth proportional to 21,348.18, 29,459.88 and 12,396.42 is: 17,106.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,348.18 : 29,459.88 = 12,396.42 : x
  2. Step 2: Convert to fraction form
    21,348.18/29,459.88 = 12,396.42/x
  3. Step 3: Cross multiply
    21,348.18x = 29,459.88 × 12,396.42
  4. Step 4: Simplify right side
    21,348.18x = 365,197,045.63
  5. Step 5: Solve for x
    x = 365,197,045.63/21,348.18
  6. Step 6: Final answer
    x = 17,106.71

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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.