Home / 38,391.64-52,979.65-21,395.80

Finding the Fourth Proportional to 38,391.64, 52,979.65 and 21,395.80

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Solution

The fourth proportional to 38,391.64, 52,979.65 and 21,395.80 is: 29,525.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,391.64 : 52,979.65 = 21,395.80 : x
  2. Step 2: Convert to fraction form
    38,391.64/52,979.65 = 21,395.80/x
  3. Step 3: Cross multiply
    38,391.64x = 52,979.65 × 21,395.80
  4. Step 4: Simplify right side
    38,391.64x = 1,133,541,995.47
  5. Step 5: Solve for x
    x = 1,133,541,995.47/38,391.64
  6. Step 6: Final answer
    x = 29,525.75

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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.