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Finding the Fourth Proportional to 30,571.40, 45,854.03 and 8,387.01

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Solution

The fourth proportional to 30,571.40, 45,854.03 and 8,387.01 is: 12,579.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,571.40 : 45,854.03 = 8,387.01 : x
  2. Step 2: Convert to fraction form
    30,571.40/45,854.03 = 8,387.01/x
  3. Step 3: Cross multiply
    30,571.40x = 45,854.03 × 8,387.01
  4. Step 4: Simplify right side
    30,571.40x = 384,578,229.12
  5. Step 5: Solve for x
    x = 384,578,229.12/30,571.40
  6. Step 6: Final answer
    x = 12,579.67

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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.