Home / 30,590.12-45,786.70-15,778.66

Finding the Fourth Proportional to 30,590.12, 45,786.70 and 15,778.66

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Solution

The fourth proportional to 30,590.12, 45,786.70 and 15,778.66 is: 23,617.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,590.12 : 45,786.70 = 15,778.66 : x
  2. Step 2: Convert to fraction form
    30,590.12/45,786.70 = 15,778.66/x
  3. Step 3: Cross multiply
    30,590.12x = 45,786.70 × 15,778.66
  4. Step 4: Simplify right side
    30,590.12x = 722,452,771.82
  5. Step 5: Solve for x
    x = 722,452,771.82/30,590.12
  6. Step 6: Final answer
    x = 23,617.19

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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.