Home / 38,710.40-53,418.84-21,943.04

Finding the Fourth Proportional to 38,710.40, 53,418.84 and 21,943.04

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Solution

The fourth proportional to 38,710.40, 53,418.84 and 21,943.04 is: 30,280.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,710.40 : 53,418.84 = 21,943.04 : x
  2. Step 2: Convert to fraction form
    38,710.40/53,418.84 = 21,943.04/x
  3. Step 3: Cross multiply
    38,710.40x = 53,418.84 × 21,943.04
  4. Step 4: Simplify right side
    38,710.40x = 1,172,171,742.87
  5. Step 5: Solve for x
    x = 1,172,171,742.87/38,710.40
  6. Step 6: Final answer
    x = 30,280.54

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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.