Home / 18,987.91-26,166.31-13,672.69

Finding the Fourth Proportional to 18,987.91, 26,166.31 and 13,672.69

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Solution

The fourth proportional to 18,987.91, 26,166.31 and 13,672.69 is: 18,841.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,987.91 : 26,166.31 = 13,672.69 : x
  2. Step 2: Convert to fraction form
    18,987.91/26,166.31 = 13,672.69/x
  3. Step 3: Cross multiply
    18,987.91x = 26,166.31 × 13,672.69
  4. Step 4: Simplify right side
    18,987.91x = 357,763,845.07
  5. Step 5: Solve for x
    x = 357,763,845.07/18,987.91
  6. Step 6: Final answer
    x = 18,841.67

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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.