Home / 38,664.28-53,361-21,671.32

Finding the Fourth Proportional to 38,664.28, 53,361 and 21,671.32

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Solution

The fourth proportional to 38,664.28, 53,361 and 21,671.32 is: 29,908.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,664.28 : 53,361 = 21,671.32 : x
  2. Step 2: Convert to fraction form
    38,664.28/53,361 = 21,671.32/x
  3. Step 3: Cross multiply
    38,664.28x = 53,361 × 21,671.32
  4. Step 4: Simplify right side
    38,664.28x = 1,156,403,306.52
  5. Step 5: Solve for x
    x = 1,156,403,306.52/38,664.28
  6. Step 6: Final answer
    x = 29,908.83

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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.