Home / 38,480.08-53,100-21,485.92

Finding the Fourth Proportional to 38,480.08, 53,100 and 21,485.92

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Solution

The fourth proportional to 38,480.08, 53,100 and 21,485.92 is: 29,649.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,480.08 : 53,100 = 21,485.92 : x
  2. Step 2: Convert to fraction form
    38,480.08/53,100 = 21,485.92/x
  3. Step 3: Cross multiply
    38,480.08x = 53,100 × 21,485.92
  4. Step 4: Simplify right side
    38,480.08x = 1,140,902,352
  5. Step 5: Solve for x
    x = 1,140,902,352/38,480.08
  6. Step 6: Final answer
    x = 29,649.17

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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.