Home / 30,289.58-45,430.89-8,104.70

Finding the Fourth Proportional to 30,289.58, 45,430.89 and 8,104.70

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Solution

The fourth proportional to 30,289.58, 45,430.89 and 8,104.70 is: 12,156.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,289.58 : 45,430.89 = 8,104.70 : x
  2. Step 2: Convert to fraction form
    30,289.58/45,430.89 = 8,104.70/x
  3. Step 3: Cross multiply
    30,289.58x = 45,430.89 × 8,104.70
  4. Step 4: Simplify right side
    30,289.58x = 368,203,734.18
  5. Step 5: Solve for x
    x = 368,203,734.18/30,289.58
  6. Step 6: Final answer
    x = 12,156.12

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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.