Home / 18,709.18-25,823.91-11,153.09

Finding the Fourth Proportional to 18,709.18, 25,823.91 and 11,153.09

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Solution

The fourth proportional to 18,709.18, 25,823.91 and 11,153.09 is: 15,394.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,709.18 : 25,823.91 = 11,153.09 : x
  2. Step 2: Convert to fraction form
    18,709.18/25,823.91 = 11,153.09/x
  3. Step 3: Cross multiply
    18,709.18x = 25,823.91 × 11,153.09
  4. Step 4: Simplify right side
    18,709.18x = 288,016,498.77
  5. Step 5: Solve for x
    x = 288,016,498.77/18,709.18
  6. Step 6: Final answer
    x = 15,394.40

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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.