Home / 18,709.74-25,818.90-12,328.56

Finding the Fourth Proportional to 18,709.74, 25,818.90 and 12,328.56

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Solution

The fourth proportional to 18,709.74, 25,818.90 and 12,328.56 is: 17,013.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,709.74 : 25,818.90 = 12,328.56 : x
  2. Step 2: Convert to fraction form
    18,709.74/25,818.90 = 12,328.56/x
  3. Step 3: Cross multiply
    18,709.74x = 25,818.90 × 12,328.56
  4. Step 4: Simplify right side
    18,709.74x = 318,309,857.78
  5. Step 5: Solve for x
    x = 318,309,857.78/18,709.74
  6. Step 6: Final answer
    x = 17,013.06

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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.