Home / 19,855.45-27,400.55-10,903.53

Finding the Fourth Proportional to 19,855.45, 27,400.55 and 10,903.53

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Solution

The fourth proportional to 19,855.45, 27,400.55 and 10,903.53 is: 15,046.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,855.45 : 27,400.55 = 10,903.53 : x
  2. Step 2: Convert to fraction form
    19,855.45/27,400.55 = 10,903.53/x
  3. Step 3: Cross multiply
    19,855.45x = 27,400.55 × 10,903.53
  4. Step 4: Simplify right side
    19,855.45x = 298,762,613.05
  5. Step 5: Solve for x
    x = 298,762,613.05/19,855.45
  6. Step 6: Final answer
    x = 15,046.89

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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.