Home / 39,359.99-54,317.65-21,455.89

Finding the Fourth Proportional to 39,359.99, 54,317.65 and 21,455.89

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Solution

The fourth proportional to 39,359.99, 54,317.65 and 21,455.89 is: 29,609.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,359.99 : 54,317.65 = 21,455.89 : x
  2. Step 2: Convert to fraction form
    39,359.99/54,317.65 = 21,455.89/x
  3. Step 3: Cross multiply
    39,359.99x = 54,317.65 × 21,455.89
  4. Step 4: Simplify right side
    39,359.99x = 1,165,433,523.46
  5. Step 5: Solve for x
    x = 1,165,433,523.46/39,359.99
  6. Step 6: Final answer
    x = 29,609.60

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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.