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Finding the Fourth Proportional to 20,315.01, 30,437.64 and 18,260.67

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Solution

The fourth proportional to 20,315.01, 30,437.64 and 18,260.67 is: 27,359.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,315.01 : 30,437.64 = 18,260.67 : x
  2. Step 2: Convert to fraction form
    20,315.01/30,437.64 = 18,260.67/x
  3. Step 3: Cross multiply
    20,315.01x = 30,437.64 × 18,260.67
  4. Step 4: Simplify right side
    20,315.01x = 555,811,699.62
  5. Step 5: Solve for x
    x = 555,811,699.62/20,315.01
  6. Step 6: Final answer
    x = 27,359.66

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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.