Home / 18,140.55-27,210.82-6,453.87

Finding the Fourth Proportional to 18,140.55, 27,210.82 and 6,453.87

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Solution

The fourth proportional to 18,140.55, 27,210.82 and 6,453.87 is: 9,680.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,140.55 : 27,210.82 = 6,453.87 : x
  2. Step 2: Convert to fraction form
    18,140.55/27,210.82 = 6,453.87/x
  3. Step 3: Cross multiply
    18,140.55x = 27,210.82 × 6,453.87
  4. Step 4: Simplify right side
    18,140.55x = 175,615,094.87
  5. Step 5: Solve for x
    x = 175,615,094.87/18,140.55
  6. Step 6: Final answer
    x = 9,680.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.