Home / 30,127.80-45,191.70-9,351.30

Finding the Fourth Proportional to 30,127.80, 45,191.70 and 9,351.30

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Solution

The fourth proportional to 30,127.80, 45,191.70 and 9,351.30 is: 14,026.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,127.80 : 45,191.70 = 9,351.30 : x
  2. Step 2: Convert to fraction form
    30,127.80/45,191.70 = 9,351.30/x
  3. Step 3: Cross multiply
    30,127.80x = 45,191.70 × 9,351.30
  4. Step 4: Simplify right side
    30,127.80x = 422,601,144.21
  5. Step 5: Solve for x
    x = 422,601,144.21/30,127.80
  6. Step 6: Final answer
    x = 14,026.95

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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.