Home / 30,018.09-45,027.15-7,831.44

Finding the Fourth Proportional to 30,018.09, 45,027.15 and 7,831.44

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Solution

The fourth proportional to 30,018.09, 45,027.15 and 7,831.44 is: 11,747.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,018.09 : 45,027.15 = 7,831.44 : x
  2. Step 2: Convert to fraction form
    30,018.09/45,027.15 = 7,831.44/x
  3. Step 3: Cross multiply
    30,018.09x = 45,027.15 × 7,831.44
  4. Step 4: Simplify right side
    30,018.09x = 352,627,423.60
  5. Step 5: Solve for x
    x = 352,627,423.60/30,018.09
  6. Step 6: Final answer
    x = 11,747.16

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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.