Home / 39,124.40-53,991.68-21,219.33

Finding the Fourth Proportional to 39,124.40, 53,991.68 and 21,219.33

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Solution

The fourth proportional to 39,124.40, 53,991.68 and 21,219.33 is: 29,282.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,124.40 : 53,991.68 = 21,219.33 : x
  2. Step 2: Convert to fraction form
    39,124.40/53,991.68 = 21,219.33/x
  3. Step 3: Cross multiply
    39,124.40x = 53,991.68 × 21,219.33
  4. Step 4: Simplify right side
    39,124.40x = 1,145,667,275.17
  5. Step 5: Solve for x
    x = 1,145,667,275.17/39,124.40
  6. Step 6: Final answer
    x = 29,282.68

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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.