Home / 38,688.04-53,388.48-21,921.04

Finding the Fourth Proportional to 38,688.04, 53,388.48 and 21,921.04

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Solution

The fourth proportional to 38,688.04, 53,388.48 and 21,921.04 is: 30,250.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,688.04 : 53,388.48 = 21,921.04 : x
  2. Step 2: Convert to fraction form
    38,688.04/53,388.48 = 21,921.04/x
  3. Step 3: Cross multiply
    38,688.04x = 53,388.48 × 21,921.04
  4. Step 4: Simplify right side
    38,688.04x = 1,170,331,005.62
  5. Step 5: Solve for x
    x = 1,170,331,005.62/38,688.04
  6. Step 6: Final answer
    x = 30,250.46

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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.