Home / 39,612.65-54,665.46-21,708.36

Finding the Fourth Proportional to 39,612.65, 54,665.46 and 21,708.36

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Solution

The fourth proportional to 39,612.65, 54,665.46 and 21,708.36 is: 29,957.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,612.65 : 54,665.46 = 21,708.36 : x
  2. Step 2: Convert to fraction form
    39,612.65/54,665.46 = 21,708.36/x
  3. Step 3: Cross multiply
    39,612.65x = 54,665.46 × 21,708.36
  4. Step 4: Simplify right side
    39,612.65x = 1,186,697,485.25
  5. Step 5: Solve for x
    x = 1,186,697,485.25/39,612.65
  6. Step 6: Final answer
    x = 29,957.54

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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.