Home / 20,090.95-30,142.49-7,614.79

Finding the Fourth Proportional to 20,090.95, 30,142.49 and 7,614.79

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Solution

The fourth proportional to 20,090.95, 30,142.49 and 7,614.79 is: 11,424.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090.95 : 30,142.49 = 7,614.79 : x
  2. Step 2: Convert to fraction form
    20,090.95/30,142.49 = 7,614.79/x
  3. Step 3: Cross multiply
    20,090.95x = 30,142.49 × 7,614.79
  4. Step 4: Simplify right side
    20,090.95x = 229,528,731.43
  5. Step 5: Solve for x
    x = 229,528,731.43/20,090.95
  6. Step 6: Final answer
    x = 11,424.48

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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.