Home / 38,726.61-53,439.44-21,728.55

Finding the Fourth Proportional to 38,726.61, 53,439.44 and 21,728.55

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Solution

The fourth proportional to 38,726.61, 53,439.44 and 21,728.55 is: 29,983.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,726.61 : 53,439.44 = 21,728.55 : x
  2. Step 2: Convert to fraction form
    38,726.61/53,439.44 = 21,728.55/x
  3. Step 3: Cross multiply
    38,726.61x = 53,439.44 × 21,728.55
  4. Step 4: Simplify right side
    38,726.61x = 1,161,161,435.37
  5. Step 5: Solve for x
    x = 1,161,161,435.37/38,726.61
  6. Step 6: Final answer
    x = 29,983.55

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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.