Home / 39,328.72-54,273.28-21,423.68

Finding the Fourth Proportional to 39,328.72, 54,273.28 and 21,423.68

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Solution

The fourth proportional to 39,328.72, 54,273.28 and 21,423.68 is: 29,564.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,328.72 : 54,273.28 = 21,423.68 : x
  2. Step 2: Convert to fraction form
    39,328.72/54,273.28 = 21,423.68/x
  3. Step 3: Cross multiply
    39,328.72x = 54,273.28 × 21,423.68
  4. Step 4: Simplify right side
    39,328.72x = 1,162,733,383.27
  5. Step 5: Solve for x
    x = 1,162,733,383.27/39,328.72
  6. Step 6: Final answer
    x = 29,564.49

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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.