Home / 38,929.48-53,719.45-21,928.30

Finding the Fourth Proportional to 38,929.48, 53,719.45 and 21,928.30

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Solution

The fourth proportional to 38,929.48, 53,719.45 and 21,928.30 is: 30,259.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,929.48 : 53,719.45 = 21,928.30 : x
  2. Step 2: Convert to fraction form
    38,929.48/53,719.45 = 21,928.30/x
  3. Step 3: Cross multiply
    38,929.48x = 53,719.45 × 21,928.30
  4. Step 4: Simplify right side
    38,929.48x = 1,177,976,215.44
  5. Step 5: Solve for x
    x = 1,177,976,215.44/38,929.48
  6. Step 6: Final answer
    x = 30,259.23

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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.