Home / 30,169.55-45,254.10-9,109.55

Finding the Fourth Proportional to 30,169.55, 45,254.10 and 9,109.55

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Solution

The fourth proportional to 30,169.55, 45,254.10 and 9,109.55 is: 13,664.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,169.55 : 45,254.10 = 9,109.55 : x
  2. Step 2: Convert to fraction form
    30,169.55/45,254.10 = 9,109.55/x
  3. Step 3: Cross multiply
    30,169.55x = 45,254.10 × 9,109.55
  4. Step 4: Simplify right side
    30,169.55x = 412,244,486.66
  5. Step 5: Solve for x
    x = 412,244,486.66/30,169.55
  6. Step 6: Final answer
    x = 13,664.26

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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.