Home / 39,359.90-54,315.57-21,455.25

Finding the Fourth Proportional to 39,359.90, 54,315.57 and 21,455.25

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Solution

The fourth proportional to 39,359.90, 54,315.57 and 21,455.25 is: 29,607.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,359.90 : 54,315.57 = 21,455.25 : x
  2. Step 2: Convert to fraction form
    39,359.90/54,315.57 = 21,455.25/x
  3. Step 3: Cross multiply
    39,359.90x = 54,315.57 × 21,455.25
  4. Step 4: Simplify right side
    39,359.90x = 1,165,354,213.70
  5. Step 5: Solve for x
    x = 1,165,354,213.70/39,359.90
  6. Step 6: Final answer
    x = 29,607.66

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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.