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Finding the Fourth Proportional to 30,126.69, 45,218.05 and 15,346.69

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Solution

The fourth proportional to 30,126.69, 45,218.05 and 15,346.69 is: 23,034.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,126.69 : 45,218.05 = 15,346.69 : x
  2. Step 2: Convert to fraction form
    30,126.69/45,218.05 = 15,346.69/x
  3. Step 3: Cross multiply
    30,126.69x = 45,218.05 × 15,346.69
  4. Step 4: Simplify right side
    30,126.69x = 693,947,244.34
  5. Step 5: Solve for x
    x = 693,947,244.34/30,126.69
  6. Step 6: Final answer
    x = 23,034.30

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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.