Home / 38,976.28-53,787.10-21,071.28

Finding the Fourth Proportional to 38,976.28, 53,787.10 and 21,071.28

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Solution

The fourth proportional to 38,976.28, 53,787.10 and 21,071.28 is: 29,078.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,976.28 : 53,787.10 = 21,071.28 : x
  2. Step 2: Convert to fraction form
    38,976.28/53,787.10 = 21,071.28/x
  3. Step 3: Cross multiply
    38,976.28x = 53,787.10 × 21,071.28
  4. Step 4: Simplify right side
    38,976.28x = 1,133,363,044.49
  5. Step 5: Solve for x
    x = 1,133,363,044.49/38,976.28
  6. Step 6: Final answer
    x = 29,078.28

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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.