Home / 28,160.85-42,252.96-12,357.65

Finding the Fourth Proportional to 28,160.85, 42,252.96 and 12,357.65

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Solution

The fourth proportional to 28,160.85, 42,252.96 and 12,357.65 is: 18,541.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,160.85 : 42,252.96 = 12,357.65 : x
  2. Step 2: Convert to fraction form
    28,160.85/42,252.96 = 12,357.65/x
  3. Step 3: Cross multiply
    28,160.85x = 42,252.96 × 12,357.65
  4. Step 4: Simplify right side
    28,160.85x = 522,147,079.88
  5. Step 5: Solve for x
    x = 522,147,079.88/28,160.85
  6. Step 6: Final answer
    x = 18,541.60

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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.