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Finding the Fourth Proportional to 30,443.69, 45,665.54 and 19,922.57

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Solution

The fourth proportional to 30,443.69, 45,665.54 and 19,922.57 is: 29,883.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,443.69 : 45,665.54 = 19,922.57 : x
  2. Step 2: Convert to fraction form
    30,443.69/45,665.54 = 19,922.57/x
  3. Step 3: Cross multiply
    30,443.69x = 45,665.54 × 19,922.57
  4. Step 4: Simplify right side
    30,443.69x = 909,774,967.04
  5. Step 5: Solve for x
    x = 909,774,967.04/30,443.69
  6. Step 6: Final answer
    x = 29,883.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.