Home / 38,615.36-53,283.05-21,620.32

Finding the Fourth Proportional to 38,615.36, 53,283.05 and 21,620.32

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Solution

The fourth proportional to 38,615.36, 53,283.05 and 21,620.32 is: 29,832.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,615.36 : 53,283.05 = 21,620.32 : x
  2. Step 2: Convert to fraction form
    38,615.36/53,283.05 = 21,620.32/x
  3. Step 3: Cross multiply
    38,615.36x = 53,283.05 × 21,620.32
  4. Step 4: Simplify right side
    38,615.36x = 1,151,996,591.58
  5. Step 5: Solve for x
    x = 1,151,996,591.58/38,615.36
  6. Step 6: Final answer
    x = 29,832.60

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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.