Home / 39,113.85-53,977.01-21,208.80

Finding the Fourth Proportional to 39,113.85, 53,977.01 and 21,208.80

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Solution

The fourth proportional to 39,113.85, 53,977.01 and 21,208.80 is: 29,268.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,113.85 : 53,977.01 = 21,208.80 : x
  2. Step 2: Convert to fraction form
    39,113.85/53,977.01 = 21,208.80/x
  3. Step 3: Cross multiply
    39,113.85x = 53,977.01 × 21,208.80
  4. Step 4: Simplify right side
    39,113.85x = 1,144,787,503.64
  5. Step 5: Solve for x
    x = 1,144,787,503.64/39,113.85
  6. Step 6: Final answer
    x = 29,268.09

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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.