Home / 39,119.85-53,985.42-21,214.80

Finding the Fourth Proportional to 39,119.85, 53,985.42 and 21,214.80

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Solution

The fourth proportional to 39,119.85, 53,985.42 and 21,214.80 is: 29,276.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,119.85 : 53,985.42 = 21,214.80 : x
  2. Step 2: Convert to fraction form
    39,119.85/53,985.42 = 21,214.80/x
  3. Step 3: Cross multiply
    39,119.85x = 53,985.42 × 21,214.80
  4. Step 4: Simplify right side
    39,119.85x = 1,145,289,888.22
  5. Step 5: Solve for x
    x = 1,145,289,888.22/39,119.85
  6. Step 6: Final answer
    x = 29,276.44

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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.