Home / 20,623.63-28,460.41-11,191.99

Finding the Fourth Proportional to 20,623.63, 28,460.41 and 11,191.99

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Solution

The fourth proportional to 20,623.63, 28,460.41 and 11,191.99 is: 15,444.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,623.63 : 28,460.41 = 11,191.99 : x
  2. Step 2: Convert to fraction form
    20,623.63/28,460.41 = 11,191.99/x
  3. Step 3: Cross multiply
    20,623.63x = 28,460.41 × 11,191.99
  4. Step 4: Simplify right side
    20,623.63x = 318,528,624.12
  5. Step 5: Solve for x
    x = 318,528,624.12/20,623.63
  6. Step 6: Final answer
    x = 15,444.84

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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.