Home / 38,724.12-53,438.45-21,728.07

Finding the Fourth Proportional to 38,724.12, 53,438.45 and 21,728.07

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Solution

The fourth proportional to 38,724.12, 53,438.45 and 21,728.07 is: 29,984.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,724.12 : 53,438.45 = 21,728.07 : x
  2. Step 2: Convert to fraction form
    38,724.12/53,438.45 = 21,728.07/x
  3. Step 3: Cross multiply
    38,724.12x = 53,438.45 × 21,728.07
  4. Step 4: Simplify right side
    38,724.12x = 1,161,114,273.65
  5. Step 5: Solve for x
    x = 1,161,114,273.65/38,724.12
  6. Step 6: Final answer
    x = 29,984.26

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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.