Home / 20,609.46-28,441.23-11,178

Finding the Fourth Proportional to 20,609.46, 28,441.23 and 11,178

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Solution

The fourth proportional to 20,609.46, 28,441.23 and 11,178 is: 15,425.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,609.46 : 28,441.23 = 11,178 : x
  2. Step 2: Convert to fraction form
    20,609.46/28,441.23 = 11,178/x
  3. Step 3: Cross multiply
    20,609.46x = 28,441.23 × 11,178
  4. Step 4: Simplify right side
    20,609.46x = 317,916,068.94
  5. Step 5: Solve for x
    x = 317,916,068.94/20,609.46
  6. Step 6: Final answer
    x = 15,425.74

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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.