Home / 38,656.74-53,346.25-21,660.87

Finding the Fourth Proportional to 38,656.74, 53,346.25 and 21,660.87

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Solution

The fourth proportional to 38,656.74, 53,346.25 and 21,660.87 is: 29,891.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,656.74 : 53,346.25 = 21,660.87 : x
  2. Step 2: Convert to fraction form
    38,656.74/53,346.25 = 21,660.87/x
  3. Step 3: Cross multiply
    38,656.74x = 53,346.25 × 21,660.87
  4. Step 4: Simplify right side
    38,656.74x = 1,155,525,991.45
  5. Step 5: Solve for x
    x = 1,155,525,991.45/38,656.74
  6. Step 6: Final answer
    x = 29,891.96

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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.