Home / 28,107.55-42,167.40-9,384.40

Finding the Fourth Proportional to 28,107.55, 42,167.40 and 9,384.40

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Solution

The fourth proportional to 28,107.55, 42,167.40 and 9,384.40 is: 14,078.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,107.55 : 42,167.40 = 9,384.40 : x
  2. Step 2: Convert to fraction form
    28,107.55/42,167.40 = 9,384.40/x
  3. Step 3: Cross multiply
    28,107.55x = 42,167.40 × 9,384.40
  4. Step 4: Simplify right side
    28,107.55x = 395,715,748.56
  5. Step 5: Solve for x
    x = 395,715,748.56/28,107.55
  6. Step 6: Final answer
    x = 14,078.63

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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.