Home / 42,623.24-63,921-20,130.44

Finding the Fourth Proportional to 42,623.24, 63,921 and 20,130.44

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Solution

The fourth proportional to 42,623.24, 63,921 and 20,130.44 is: 30,189.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,623.24 : 63,921 = 20,130.44 : x
  2. Step 2: Convert to fraction form
    42,623.24/63,921 = 20,130.44/x
  3. Step 3: Cross multiply
    42,623.24x = 63,921 × 20,130.44
  4. Step 4: Simplify right side
    42,623.24x = 1,286,757,855.24
  5. Step 5: Solve for x
    x = 1,286,757,855.24/42,623.24
  6. Step 6: Final answer
    x = 30,189.11

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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.