Home / 39,259.76-54,175.68-21,354.40

Finding the Fourth Proportional to 39,259.76, 54,175.68 and 21,354.40

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Solution

The fourth proportional to 39,259.76, 54,175.68 and 21,354.40 is: 29,467.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,259.76 : 54,175.68 = 21,354.40 : x
  2. Step 2: Convert to fraction form
    39,259.76/54,175.68 = 21,354.40/x
  3. Step 3: Cross multiply
    39,259.76x = 54,175.68 × 21,354.40
  4. Step 4: Simplify right side
    39,259.76x = 1,156,889,140.99
  5. Step 5: Solve for x
    x = 1,156,889,140.99/39,259.76
  6. Step 6: Final answer
    x = 29,467.56

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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.