Home / 30,178.20-45,250.78-10,455.08

Finding the Fourth Proportional to 30,178.20, 45,250.78 and 10,455.08

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Solution

The fourth proportional to 30,178.20, 45,250.78 and 10,455.08 is: 15,676.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,178.20 : 45,250.78 = 10,455.08 : x
  2. Step 2: Convert to fraction form
    30,178.20/45,250.78 = 10,455.08/x
  3. Step 3: Cross multiply
    30,178.20x = 45,250.78 × 10,455.08
  4. Step 4: Simplify right side
    30,178.20x = 473,100,524.96
  5. Step 5: Solve for x
    x = 473,100,524.96/30,178.20
  6. Step 6: Final answer
    x = 15,676.90

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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.