Home / 21,307.24-29,401.14-12,922.12

Finding the Fourth Proportional to 21,307.24, 29,401.14 and 12,922.12

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Solution

The fourth proportional to 21,307.24, 29,401.14 and 12,922.12 is: 17,830.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,307.24 : 29,401.14 = 12,922.12 : x
  2. Step 2: Convert to fraction form
    21,307.24/29,401.14 = 12,922.12/x
  3. Step 3: Cross multiply
    21,307.24x = 29,401.14 × 12,922.12
  4. Step 4: Simplify right side
    21,307.24x = 379,925,059.22
  5. Step 5: Solve for x
    x = 379,925,059.22/21,307.24
  6. Step 6: Final answer
    x = 17,830.80

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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.