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Finding the Fourth Proportional to 36,387.40, 50,211.04 and 20,471.51

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Solution

The fourth proportional to 36,387.40, 50,211.04 and 20,471.51 is: 28,248.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,387.40 : 50,211.04 = 20,471.51 : x
  2. Step 2: Convert to fraction form
    36,387.40/50,211.04 = 20,471.51/x
  3. Step 3: Cross multiply
    36,387.40x = 50,211.04 × 20,471.51
  4. Step 4: Simplify right side
    36,387.40x = 1,027,895,807.47
  5. Step 5: Solve for x
    x = 1,027,895,807.47/36,387.40
  6. Step 6: Final answer
    x = 28,248.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.