Home / 38,398.28-52,983.20-21,398.79

Finding the Fourth Proportional to 38,398.28, 52,983.20 and 21,398.79

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Solution

The fourth proportional to 38,398.28, 52,983.20 and 21,398.79 is: 29,526.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,398.28 : 52,983.20 = 21,398.79 : x
  2. Step 2: Convert to fraction form
    38,398.28/52,983.20 = 21,398.79/x
  3. Step 3: Cross multiply
    38,398.28x = 52,983.20 × 21,398.79
  4. Step 4: Simplify right side
    38,398.28x = 1,133,776,370.33
  5. Step 5: Solve for x
    x = 1,133,776,370.33/38,398.28
  6. Step 6: Final answer
    x = 29,526.75

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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.