Home / 30,505.87-45,740.71-9,439.67

Finding the Fourth Proportional to 30,505.87, 45,740.71 and 9,439.67

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Solution

The fourth proportional to 30,505.87, 45,740.71 and 9,439.67 is: 14,153.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,505.87 : 45,740.71 = 9,439.67 : x
  2. Step 2: Convert to fraction form
    30,505.87/45,740.71 = 9,439.67/x
  3. Step 3: Cross multiply
    30,505.87x = 45,740.71 × 9,439.67
  4. Step 4: Simplify right side
    30,505.87x = 431,777,207.97
  5. Step 5: Solve for x
    x = 431,777,207.97/30,505.87
  6. Step 6: Final answer
    x = 14,153.91

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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.