Home / 39,308.08-54,246.20-21,403.84

Finding the Fourth Proportional to 39,308.08, 54,246.20 and 21,403.84

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Solution

The fourth proportional to 39,308.08, 54,246.20 and 21,403.84 is: 29,537.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,308.08 : 54,246.20 = 21,403.84 : x
  2. Step 2: Convert to fraction form
    39,308.08/54,246.20 = 21,403.84/x
  3. Step 3: Cross multiply
    39,308.08x = 54,246.20 × 21,403.84
  4. Step 4: Simplify right side
    39,308.08x = 1,161,076,985.41
  5. Step 5: Solve for x
    x = 1,161,076,985.41/39,308.08
  6. Step 6: Final answer
    x = 29,537.87

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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.