Home / 30,628.13-45,938.00-8,438.31

Finding the Fourth Proportional to 30,628.13, 45,938.00 and 8,438.31

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Solution

The fourth proportional to 30,628.13, 45,938.00 and 8,438.31 is: 12,656.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,628.13 : 45,938.00 = 8,438.31 : x
  2. Step 2: Convert to fraction form
    30,628.13/45,938.00 = 8,438.31/x
  3. Step 3: Cross multiply
    30,628.13x = 45,938.00 × 8,438.31
  4. Step 4: Simplify right side
    30,628.13x = 387,639,042.59
  5. Step 5: Solve for x
    x = 387,639,042.59/30,628.13
  6. Step 6: Final answer
    x = 12,656.31

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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.