Home / 30,589.28-45,900.63-11,870.05

Finding the Fourth Proportional to 30,589.28, 45,900.63 and 11,870.05

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Solution

The fourth proportional to 30,589.28, 45,900.63 and 11,870.05 is: 17,811.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,589.28 : 45,900.63 = 11,870.05 : x
  2. Step 2: Convert to fraction form
    30,589.28/45,900.63 = 11,870.05/x
  3. Step 3: Cross multiply
    30,589.28x = 45,900.63 × 11,870.05
  4. Step 4: Simplify right side
    30,589.28x = 544,842,658.38
  5. Step 5: Solve for x
    x = 544,842,658.38/30,589.28
  6. Step 6: Final answer
    x = 17,811.56

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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.