Home / 20,279,139.24-30,271,192.88-18,780,475.62

Finding the Fourth Proportional to 20,279,139.24, 30,271,192.88 and 18,780,475.62

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Solution

The fourth proportional to 20,279,139.24, 30,271,192.88 and 18,780,475.62 is: 28,034,099.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,279,139.24 : 30,271,192.88 = 18,780,475.62 : x
  2. Step 2: Convert to fraction form
    20,279,139.24/30,271,192.88 = 18,780,475.62/x
  3. Step 3: Cross multiply
    20,279,139.24x = 30,271,192.88 × 18,780,475.62
  4. Step 4: Simplify right side
    20,279,139.24x = 568,507,399,871,157.62
  5. Step 5: Solve for x
    x = 568,507,399,871,157.62/20,279,139.24
  6. Step 6: Final answer
    x = 28,034,099.14

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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.