Home / 38,615.51-53,283.23-21,620.47

Finding the Fourth Proportional to 38,615.51, 53,283.23 and 21,620.47

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Solution

The fourth proportional to 38,615.51, 53,283.23 and 21,620.47 is: 29,832.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,615.51 : 53,283.23 = 21,620.47 : x
  2. Step 2: Convert to fraction form
    38,615.51/53,283.23 = 21,620.47/x
  3. Step 3: Cross multiply
    38,615.51x = 53,283.23 × 21,620.47
  4. Step 4: Simplify right side
    38,615.51x = 1,152,008,101.20
  5. Step 5: Solve for x
    x = 1,152,008,101.20/38,615.51
  6. Step 6: Final answer
    x = 29,832.78

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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.