Home / 30,296.40-45,445.23-8,109.75

Finding the Fourth Proportional to 30,296.40, 45,445.23 and 8,109.75

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Solution

The fourth proportional to 30,296.40, 45,445.23 and 8,109.75 is: 12,164.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,296.40 : 45,445.23 = 8,109.75 : x
  2. Step 2: Convert to fraction form
    30,296.40/45,445.23 = 8,109.75/x
  3. Step 3: Cross multiply
    30,296.40x = 45,445.23 × 8,109.75
  4. Step 4: Simplify right side
    30,296.40x = 368,549,453.99
  5. Step 5: Solve for x
    x = 368,549,453.99/30,296.40
  6. Step 6: Final answer
    x = 12,164.79

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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.