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Finding the Fourth Proportional to 21,929.67, 30,263.67 and 12,497.67

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Solution

The fourth proportional to 21,929.67, 30,263.67 and 12,497.67 is: 17,247.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,929.67 : 30,263.67 = 12,497.67 : x
  2. Step 2: Convert to fraction form
    21,929.67/30,263.67 = 12,497.67/x
  3. Step 3: Cross multiply
    21,929.67x = 30,263.67 × 12,497.67
  4. Step 4: Simplify right side
    21,929.67x = 378,225,360.65
  5. Step 5: Solve for x
    x = 378,225,360.65/21,929.67
  6. Step 6: Final answer
    x = 17,247.20

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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.