Home / 30,108.24-45,135.36-13,454.64

Finding the Fourth Proportional to 30,108.24, 45,135.36 and 13,454.64

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Solution

The fourth proportional to 30,108.24, 45,135.36 and 13,454.64 is: 20,169.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,108.24 : 45,135.36 = 13,454.64 : x
  2. Step 2: Convert to fraction form
    30,108.24/45,135.36 = 13,454.64/x
  3. Step 3: Cross multiply
    30,108.24x = 45,135.36 × 13,454.64
  4. Step 4: Simplify right side
    30,108.24x = 607,280,020.07
  5. Step 5: Solve for x
    x = 607,280,020.07/30,108.24
  6. Step 6: Final answer
    x = 20,169.89

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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.