Home / 30,327.81-45,457.20-18,455.39

Finding the Fourth Proportional to 30,327.81, 45,457.20 and 18,455.39

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Solution

The fourth proportional to 30,327.81, 45,457.20 and 18,455.39 is: 27,662.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,327.81 : 45,457.20 = 18,455.39 : x
  2. Step 2: Convert to fraction form
    30,327.81/45,457.20 = 18,455.39/x
  3. Step 3: Cross multiply
    30,327.81x = 45,457.20 × 18,455.39
  4. Step 4: Simplify right side
    30,327.81x = 838,930,553.18
  5. Step 5: Solve for x
    x = 838,930,553.18/30,327.81
  6. Step 6: Final answer
    x = 27,662.09

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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.