Home / 18,987.57-26,202.69-10,489.68

Finding the Fourth Proportional to 18,987.57, 26,202.69 and 10,489.68

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Solution

The fourth proportional to 18,987.57, 26,202.69 and 10,489.68 is: 14,475.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,987.57 : 26,202.69 = 10,489.68 : x
  2. Step 2: Convert to fraction form
    18,987.57/26,202.69 = 10,489.68/x
  3. Step 3: Cross multiply
    18,987.57x = 26,202.69 × 10,489.68
  4. Step 4: Simplify right side
    18,987.57x = 274,857,833.24
  5. Step 5: Solve for x
    x = 274,857,833.24/18,987.57
  6. Step 6: Final answer
    x = 14,475.67

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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.