Home / 39,124.80-53,991.72-21,219.30

Finding the Fourth Proportional to 39,124.80, 53,991.72 and 21,219.30

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Solution

The fourth proportional to 39,124.80, 53,991.72 and 21,219.30 is: 29,282.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,124.80 : 53,991.72 = 21,219.30 : x
  2. Step 2: Convert to fraction form
    39,124.80/53,991.72 = 21,219.30/x
  3. Step 3: Cross multiply
    39,124.80x = 53,991.72 × 21,219.30
  4. Step 4: Simplify right side
    39,124.80x = 1,145,666,504.20
  5. Step 5: Solve for x
    x = 1,145,666,504.20/39,124.80
  6. Step 6: Final answer
    x = 29,282.36

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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.