Home / 30,390.72-45,590.64-13,750.38

Finding the Fourth Proportional to 30,390.72, 45,590.64 and 13,750.38

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Solution

The fourth proportional to 30,390.72, 45,590.64 and 13,750.38 is: 20,627.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,390.72 : 45,590.64 = 13,750.38 : x
  2. Step 2: Convert to fraction form
    30,390.72/45,590.64 = 13,750.38/x
  3. Step 3: Cross multiply
    30,390.72x = 45,590.64 × 13,750.38
  4. Step 4: Simplify right side
    30,390.72x = 626,888,624.44
  5. Step 5: Solve for x
    x = 626,888,624.44/30,390.72
  6. Step 6: Final answer
    x = 20,627.63

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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.