Home / 21,030.06-29,021.36-11,469.76

Finding the Fourth Proportional to 21,030.06, 29,021.36 and 11,469.76

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Solution

The fourth proportional to 21,030.06, 29,021.36 and 11,469.76 is: 15,828.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,030.06 : 29,021.36 = 11,469.76 : x
  2. Step 2: Convert to fraction form
    21,030.06/29,021.36 = 11,469.76/x
  3. Step 3: Cross multiply
    21,030.06x = 29,021.36 × 11,469.76
  4. Step 4: Simplify right side
    21,030.06x = 332,868,034.07
  5. Step 5: Solve for x
    x = 332,868,034.07/21,030.06
  6. Step 6: Final answer
    x = 15,828.20

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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.