Home / 28,161.11-42,240.04-9,440.39

Finding the Fourth Proportional to 28,161.11, 42,240.04 and 9,440.39

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Solution

The fourth proportional to 28,161.11, 42,240.04 and 9,440.39 is: 14,160.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,161.11 : 42,240.04 = 9,440.39 : x
  2. Step 2: Convert to fraction form
    28,161.11/42,240.04 = 9,440.39/x
  3. Step 3: Cross multiply
    28,161.11x = 42,240.04 × 9,440.39
  4. Step 4: Simplify right side
    28,161.11x = 398,762,216.41
  5. Step 5: Solve for x
    x = 398,762,216.41/28,161.11
  6. Step 6: Final answer
    x = 14,160.03

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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.