Home / 30,200.55-45,300.60-9,140.55

Finding the Fourth Proportional to 30,200.55, 45,300.60 and 9,140.55

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Solution

The fourth proportional to 30,200.55, 45,300.60 and 9,140.55 is: 13,710.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,200.55 : 45,300.60 = 9,140.55 : x
  2. Step 2: Convert to fraction form
    30,200.55/45,300.60 = 9,140.55/x
  3. Step 3: Cross multiply
    30,200.55x = 45,300.60 × 9,140.55
  4. Step 4: Simplify right side
    30,200.55x = 414,072,399.33
  5. Step 5: Solve for x
    x = 414,072,399.33/30,200.55
  6. Step 6: Final answer
    x = 13,710.76

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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.