Home / 39,124.55-53,991.80-21,219.47

Finding the Fourth Proportional to 39,124.55, 53,991.80 and 21,219.47

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Solution

The fourth proportional to 39,124.55, 53,991.80 and 21,219.47 is: 29,282.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,124.55 : 53,991.80 = 21,219.47 : x
  2. Step 2: Convert to fraction form
    39,124.55/53,991.80 = 21,219.47/x
  3. Step 3: Cross multiply
    39,124.55x = 53,991.80 × 21,219.47
  4. Step 4: Simplify right side
    39,124.55x = 1,145,677,286.33
  5. Step 5: Solve for x
    x = 1,145,677,286.33/39,124.55
  6. Step 6: Final answer
    x = 29,282.82

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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.