Home / 38,975.74-53,786.55-21,070.75

Finding the Fourth Proportional to 38,975.74, 53,786.55 and 21,070.75

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Solution

The fourth proportional to 38,975.74, 53,786.55 and 21,070.75 is: 29,077.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,975.74 : 53,786.55 = 21,070.75 : x
  2. Step 2: Convert to fraction form
    38,975.74/53,786.55 = 21,070.75/x
  3. Step 3: Cross multiply
    38,975.74x = 53,786.55 × 21,070.75
  4. Step 4: Simplify right side
    38,975.74x = 1,133,322,948.41
  5. Step 5: Solve for x
    x = 1,133,322,948.41/38,975.74
  6. Step 6: Final answer
    x = 29,077.65

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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.