Home / 20,662.41-28,527.85-15,873.82

Finding the Fourth Proportional to 20,662.41, 28,527.85 and 15,873.82

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Solution

The fourth proportional to 20,662.41, 28,527.85 and 15,873.82 is: 21,916.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,662.41 : 28,527.85 = 15,873.82 : x
  2. Step 2: Convert to fraction form
    20,662.41/28,527.85 = 15,873.82/x
  3. Step 3: Cross multiply
    20,662.41x = 28,527.85 × 15,873.82
  4. Step 4: Simplify right side
    20,662.41x = 452,845,955.89
  5. Step 5: Solve for x
    x = 452,845,955.89/20,662.41
  6. Step 6: Final answer
    x = 21,916.42

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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.