Home / 18,621.09-25,686.77-12,248.72

Finding the Fourth Proportional to 18,621.09, 25,686.77 and 12,248.72

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Solution

The fourth proportional to 18,621.09, 25,686.77 and 12,248.72 is: 16,896.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,621.09 : 25,686.77 = 12,248.72 : x
  2. Step 2: Convert to fraction form
    18,621.09/25,686.77 = 12,248.72/x
  3. Step 3: Cross multiply
    18,621.09x = 25,686.77 × 12,248.72
  4. Step 4: Simplify right side
    18,621.09x = 314,630,028.98
  5. Step 5: Solve for x
    x = 314,630,028.98/18,621.09
  6. Step 6: Final answer
    x = 16,896.43

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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.