Home / 30,033.20-45,042.80-11,315.11

Finding the Fourth Proportional to 30,033.20, 45,042.80 and 11,315.11

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Solution

The fourth proportional to 30,033.20, 45,042.80 and 11,315.11 is: 16,970.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,033.20 : 45,042.80 = 11,315.11 : x
  2. Step 2: Convert to fraction form
    30,033.20/45,042.80 = 11,315.11/x
  3. Step 3: Cross multiply
    30,033.20x = 45,042.80 × 11,315.11
  4. Step 4: Simplify right side
    30,033.20x = 509,664,152.39
  5. Step 5: Solve for x
    x = 509,664,152.39/30,033.20
  6. Step 6: Final answer
    x = 16,970.03

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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.