Home / 21,460.65-29,615.73-11,900.67

Finding the Fourth Proportional to 21,460.65, 29,615.73 and 11,900.67

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Solution

The fourth proportional to 21,460.65, 29,615.73 and 11,900.67 is: 16,422.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,460.65 : 29,615.73 = 11,900.67 : x
  2. Step 2: Convert to fraction form
    21,460.65/29,615.73 = 11,900.67/x
  3. Step 3: Cross multiply
    21,460.65x = 29,615.73 × 11,900.67
  4. Step 4: Simplify right side
    21,460.65x = 352,447,029.54
  5. Step 5: Solve for x
    x = 352,447,029.54/21,460.65
  6. Step 6: Final answer
    x = 16,422.94

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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.