Home / 18,931.36-28,173.56-18,300.67

Finding the Fourth Proportional to 18,931.36, 28,173.56 and 18,300.67

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Solution

The fourth proportional to 18,931.36, 28,173.56 and 18,300.67 is: 27,234.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,931.36 : 28,173.56 = 18,300.67 : x
  2. Step 2: Convert to fraction form
    18,931.36/28,173.56 = 18,300.67/x
  3. Step 3: Cross multiply
    18,931.36x = 28,173.56 × 18,300.67
  4. Step 4: Simplify right side
    18,931.36x = 515,595,024.29
  5. Step 5: Solve for x
    x = 515,595,024.29/18,931.36
  6. Step 6: Final answer
    x = 27,234.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.