Home / 18,719.47-25,832.67-10,221.58

Finding the Fourth Proportional to 18,719.47, 25,832.67 and 10,221.58

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Solution

The fourth proportional to 18,719.47, 25,832.67 and 10,221.58 is: 14,105.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,719.47 : 25,832.67 = 10,221.58 : x
  2. Step 2: Convert to fraction form
    18,719.47/25,832.67 = 10,221.58/x
  3. Step 3: Cross multiply
    18,719.47x = 25,832.67 × 10,221.58
  4. Step 4: Simplify right side
    18,719.47x = 264,050,609.17
  5. Step 5: Solve for x
    x = 264,050,609.17/18,719.47
  6. Step 6: Final answer
    x = 14,105.67

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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.