Home / 21,030.82-29,022.28-11,470.68

Finding the Fourth Proportional to 21,030.82, 29,022.28 and 11,470.68

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Solution

The fourth proportional to 21,030.82, 29,022.28 and 11,470.68 is: 15,829.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,030.82 : 29,022.28 = 11,470.68 : x
  2. Step 2: Convert to fraction form
    21,030.82/29,022.28 = 11,470.68/x
  3. Step 3: Cross multiply
    21,030.82x = 29,022.28 × 11,470.68
  4. Step 4: Simplify right side
    21,030.82x = 332,905,286.75
  5. Step 5: Solve for x
    x = 332,905,286.75/21,030.82
  6. Step 6: Final answer
    x = 15,829.40

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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.