Home / 39,339.40-54,289.44-21,434.68

Finding the Fourth Proportional to 39,339.40, 54,289.44 and 21,434.68

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Solution

The fourth proportional to 39,339.40, 54,289.44 and 21,434.68 is: 29,580.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,339.40 : 54,289.44 = 21,434.68 : x
  2. Step 2: Convert to fraction form
    39,339.40/54,289.44 = 21,434.68/x
  3. Step 3: Cross multiply
    39,339.40x = 54,289.44 × 21,434.68
  4. Step 4: Simplify right side
    39,339.40x = 1,163,676,773.78
  5. Step 5: Solve for x
    x = 1,163,676,773.78/39,339.40
  6. Step 6: Final answer
    x = 29,580.44

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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.