Home / 38,724.75-53,440.16-21,957.75

Finding the Fourth Proportional to 38,724.75, 53,440.16 and 21,957.75

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Solution

The fourth proportional to 38,724.75, 53,440.16 and 21,957.75 is: 30,301.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,724.75 : 53,440.16 = 21,957.75 : x
  2. Step 2: Convert to fraction form
    38,724.75/53,440.16 = 21,957.75/x
  3. Step 3: Cross multiply
    38,724.75x = 53,440.16 × 21,957.75
  4. Step 4: Simplify right side
    38,724.75x = 1,173,425,563.45
  5. Step 5: Solve for x
    x = 1,173,425,563.45/38,724.75
  6. Step 6: Final answer
    x = 30,301.70

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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.