Home / 21,030.54-29,021.54-11,470.70

Finding the Fourth Proportional to 21,030.54, 29,021.54 and 11,470.70

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Solution

The fourth proportional to 21,030.54, 29,021.54 and 11,470.70 is: 15,829.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,030.54 : 29,021.54 = 11,470.70 : x
  2. Step 2: Convert to fraction form
    21,030.54/29,021.54 = 11,470.70/x
  3. Step 3: Cross multiply
    21,030.54x = 29,021.54 × 11,470.70
  4. Step 4: Simplify right side
    21,030.54x = 332,897,378.88
  5. Step 5: Solve for x
    x = 332,897,378.88/21,030.54
  6. Step 6: Final answer
    x = 15,829.24

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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.