Home / 30,289.21-45,435.63-9,512.71

Finding the Fourth Proportional to 30,289.21, 45,435.63 and 9,512.71

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Solution

The fourth proportional to 30,289.21, 45,435.63 and 9,512.71 is: 14,269.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,289.21 : 45,435.63 = 9,512.71 : x
  2. Step 2: Convert to fraction form
    30,289.21/45,435.63 = 9,512.71/x
  3. Step 3: Cross multiply
    30,289.21x = 45,435.63 × 9,512.71
  4. Step 4: Simplify right side
    30,289.21x = 432,215,971.86
  5. Step 5: Solve for x
    x = 432,215,971.86/30,289.21
  6. Step 6: Final answer
    x = 14,269.64

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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.