Home / 30,343.95-45,520.56-9,279.09

Finding the Fourth Proportional to 30,343.95, 45,520.56 and 9,279.09

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Solution

The fourth proportional to 30,343.95, 45,520.56 and 9,279.09 is: 13,920.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,343.95 : 45,520.56 = 9,279.09 : x
  2. Step 2: Convert to fraction form
    30,343.95/45,520.56 = 9,279.09/x
  3. Step 3: Cross multiply
    30,343.95x = 45,520.56 × 9,279.09
  4. Step 4: Simplify right side
    30,343.95x = 422,389,373.09
  5. Step 5: Solve for x
    x = 422,389,373.09/30,343.95
  6. Step 6: Final answer
    x = 13,920.05

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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.