Home / 38,391.54-52,980.85-21,395.31

Finding the Fourth Proportional to 38,391.54, 52,980.85 and 21,395.31

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Solution

The fourth proportional to 38,391.54, 52,980.85 and 21,395.31 is: 29,525.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,391.54 : 52,980.85 = 21,395.31 : x
  2. Step 2: Convert to fraction form
    38,391.54/52,980.85 = 21,395.31/x
  3. Step 3: Cross multiply
    38,391.54x = 52,980.85 × 21,395.31
  4. Step 4: Simplify right side
    38,391.54x = 1,133,541,709.81
  5. Step 5: Solve for x
    x = 1,133,541,709.81/38,391.54
  6. Step 6: Final answer
    x = 29,525.82

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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.