Home / 39,421.52-54,401.32-21,516.64

Finding the Fourth Proportional to 39,421.52, 54,401.32 and 21,516.64

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Solution

The fourth proportional to 39,421.52, 54,401.32 and 21,516.64 is: 29,692.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,421.52 : 54,401.32 = 21,516.64 : x
  2. Step 2: Convert to fraction form
    39,421.52/54,401.32 = 21,516.64/x
  3. Step 3: Cross multiply
    39,421.52x = 54,401.32 × 21,516.64
  4. Step 4: Simplify right side
    39,421.52x = 1,170,533,617.96
  5. Step 5: Solve for x
    x = 1,170,533,617.96/39,421.52
  6. Step 6: Final answer
    x = 29,692.76

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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.