Home / 30,451.56-45,646.40-20,591.96

Finding the Fourth Proportional to 30,451.56, 45,646.40 and 20,591.96

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Solution

The fourth proportional to 30,451.56, 45,646.40 and 20,591.96 is: 30,867.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,451.56 : 45,646.40 = 20,591.96 : x
  2. Step 2: Convert to fraction form
    30,451.56/45,646.40 = 20,591.96/x
  3. Step 3: Cross multiply
    30,451.56x = 45,646.40 × 20,591.96
  4. Step 4: Simplify right side
    30,451.56x = 939,948,842.94
  5. Step 5: Solve for x
    x = 939,948,842.94/30,451.56
  6. Step 6: Final answer
    x = 30,867.02

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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.