Home / 38,422.76-53,021.94-21,426.28

Finding the Fourth Proportional to 38,422.76, 53,021.94 and 21,426.28

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Solution

The fourth proportional to 38,422.76, 53,021.94 and 21,426.28 is: 29,567.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,422.76 : 53,021.94 = 21,426.28 : x
  2. Step 2: Convert to fraction form
    38,422.76/53,021.94 = 21,426.28/x
  3. Step 3: Cross multiply
    38,422.76x = 53,021.94 × 21,426.28
  4. Step 4: Simplify right side
    38,422.76x = 1,136,062,932.58
  5. Step 5: Solve for x
    x = 1,136,062,932.58/38,422.76
  6. Step 6: Final answer
    x = 29,567.45

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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.