Home / 38,389.56-52,976.70-21,393.78

Finding the Fourth Proportional to 38,389.56, 52,976.70 and 21,393.78

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Solution

The fourth proportional to 38,389.56, 52,976.70 and 21,393.78 is: 29,522.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,389.56 : 52,976.70 = 21,393.78 : x
  2. Step 2: Convert to fraction form
    38,389.56/52,976.70 = 21,393.78/x
  3. Step 3: Cross multiply
    38,389.56x = 52,976.70 × 21,393.78
  4. Step 4: Simplify right side
    38,389.56x = 1,133,371,864.93
  5. Step 5: Solve for x
    x = 1,133,371,864.93/38,389.56
  6. Step 6: Final answer
    x = 29,522.92

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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.