Home / 38,719.49-53,431.88-21,722.32

Finding the Fourth Proportional to 38,719.49, 53,431.88 and 21,722.32

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Solution

The fourth proportional to 38,719.49, 53,431.88 and 21,722.32 is: 29,976.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,719.49 : 53,431.88 = 21,722.32 : x
  2. Step 2: Convert to fraction form
    38,719.49/53,431.88 = 21,722.32/x
  3. Step 3: Cross multiply
    38,719.49x = 53,431.88 × 21,722.32
  4. Step 4: Simplify right side
    38,719.49x = 1,160,664,153.37
  5. Step 5: Solve for x
    x = 1,160,664,153.37/38,719.49
  6. Step 6: Final answer
    x = 29,976.22

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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.