Home / 38,722.50-53,436.01-21,725.33

Finding the Fourth Proportional to 38,722.50, 53,436.01 and 21,725.33

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Solution

The fourth proportional to 38,722.50, 53,436.01 and 21,725.33 is: 29,980.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,722.50 : 53,436.01 = 21,725.33 : x
  2. Step 2: Convert to fraction form
    38,722.50/53,436.01 = 21,725.33/x
  3. Step 3: Cross multiply
    38,722.50x = 53,436.01 × 21,725.33
  4. Step 4: Simplify right side
    38,722.50x = 1,160,914,951.13
  5. Step 5: Solve for x
    x = 1,160,914,951.13/38,722.50
  6. Step 6: Final answer
    x = 29,980.37

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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.