Home / 30,319.14-45,483.57-12,791.55

Finding the Fourth Proportional to 30,319.14, 45,483.57 and 12,791.55

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Solution

The fourth proportional to 30,319.14, 45,483.57 and 12,791.55 is: 19,189.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,319.14 : 45,483.57 = 12,791.55 : x
  2. Step 2: Convert to fraction form
    30,319.14/45,483.57 = 12,791.55/x
  3. Step 3: Cross multiply
    30,319.14x = 45,483.57 × 12,791.55
  4. Step 4: Simplify right side
    30,319.14x = 581,805,359.83
  5. Step 5: Solve for x
    x = 581,805,359.83/30,319.14
  6. Step 6: Final answer
    x = 19,189.38

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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.