Home / 18,402.34-25,391.72-11,689.06

Finding the Fourth Proportional to 18,402.34, 25,391.72 and 11,689.06

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Solution

The fourth proportional to 18,402.34, 25,391.72 and 11,689.06 is: 16,128.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,402.34 : 25,391.72 = 11,689.06 : x
  2. Step 2: Convert to fraction form
    18,402.34/25,391.72 = 11,689.06/x
  3. Step 3: Cross multiply
    18,402.34x = 25,391.72 × 11,689.06
  4. Step 4: Simplify right side
    18,402.34x = 296,805,338.58
  5. Step 5: Solve for x
    x = 296,805,338.58/18,402.34
  6. Step 6: Final answer
    x = 16,128.67

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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.