Home / 14,478.09-19,980.14-8,104.65

Finding the Fourth Proportional to 14,478.09, 19,980.14 and 8,104.65

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Solution

The fourth proportional to 14,478.09, 19,980.14 and 8,104.65 is: 11,184.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,478.09 : 19,980.14 = 8,104.65 : x
  2. Step 2: Convert to fraction form
    14,478.09/19,980.14 = 8,104.65/x
  3. Step 3: Cross multiply
    14,478.09x = 19,980.14 × 8,104.65
  4. Step 4: Simplify right side
    14,478.09x = 161,932,041.65
  5. Step 5: Solve for x
    x = 161,932,041.65/14,478.09
  6. Step 6: Final answer
    x = 11,184.63

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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.