Home / 13,490.55-18,618.05-8,184.65

Finding the Fourth Proportional to 13,490.55, 18,618.05 and 8,184.65

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Solution

The fourth proportional to 13,490.55, 18,618.05 and 8,184.65 is: 11,295.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,490.55 : 18,618.05 = 8,184.65 : x
  2. Step 2: Convert to fraction form
    13,490.55/18,618.05 = 8,184.65/x
  3. Step 3: Cross multiply
    13,490.55x = 18,618.05 × 8,184.65
  4. Step 4: Simplify right side
    13,490.55x = 152,382,150.30
  5. Step 5: Solve for x
    x = 152,382,150.30/13,490.55
  6. Step 6: Final answer
    x = 11,295.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.