Home / 20,623.19-28,460.03-11,191.76

Finding the Fourth Proportional to 20,623.19, 28,460.03 and 11,191.76

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Solution

The fourth proportional to 20,623.19, 28,460.03 and 11,191.76 is: 15,444.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,623.19 : 28,460.03 = 11,191.76 : x
  2. Step 2: Convert to fraction form
    20,623.19/28,460.03 = 11,191.76/x
  3. Step 3: Cross multiply
    20,623.19x = 28,460.03 × 11,191.76
  4. Step 4: Simplify right side
    20,623.19x = 318,517,627.09
  5. Step 5: Solve for x
    x = 318,517,627.09/20,623.19
  6. Step 6: Final answer
    x = 15,444.63

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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.