Home / 30,406.05-45,609.08-13,765.71

Finding the Fourth Proportional to 30,406.05, 45,609.08 and 13,765.71

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Solution

The fourth proportional to 30,406.05, 45,609.08 and 13,765.71 is: 20,648.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,406.05 : 45,609.08 = 13,765.71 : x
  2. Step 2: Convert to fraction form
    30,406.05/45,609.08 = 13,765.71/x
  3. Step 3: Cross multiply
    30,406.05x = 45,609.08 × 13,765.71
  4. Step 4: Simplify right side
    30,406.05x = 627,841,299.82
  5. Step 5: Solve for x
    x = 627,841,299.82/30,406.05
  6. Step 6: Final answer
    x = 20,648.57

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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.