Home / 39,308.96-54,247.02-21,404.32

Finding the Fourth Proportional to 39,308.96, 54,247.02 and 21,404.32

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Solution

The fourth proportional to 39,308.96, 54,247.02 and 21,404.32 is: 29,538.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,308.96 : 54,247.02 = 21,404.32 : x
  2. Step 2: Convert to fraction form
    39,308.96/54,247.02 = 21,404.32/x
  3. Step 3: Cross multiply
    39,308.96x = 54,247.02 × 21,404.32
  4. Step 4: Simplify right side
    39,308.96x = 1,161,120,359.24
  5. Step 5: Solve for x
    x = 1,161,120,359.24/39,308.96
  6. Step 6: Final answer
    x = 29,538.31

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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.