Home / 30,178.55-45,272.59-9,115.97

Finding the Fourth Proportional to 30,178.55, 45,272.59 and 9,115.97

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Solution

The fourth proportional to 30,178.55, 45,272.59 and 9,115.97 is: 13,675.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,178.55 : 45,272.59 = 9,115.97 : x
  2. Step 2: Convert to fraction form
    30,178.55/45,272.59 = 9,115.97/x
  3. Step 3: Cross multiply
    30,178.55x = 45,272.59 × 9,115.97
  4. Step 4: Simplify right side
    30,178.55x = 412,703,756.16
  5. Step 5: Solve for x
    x = 412,703,756.16/30,178.55
  6. Step 6: Final answer
    x = 13,675.40

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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.