Home / 38,799.20-53,538.20-21,804.32

Finding the Fourth Proportional to 38,799.20, 53,538.20 and 21,804.32

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Solution

The fourth proportional to 38,799.20, 53,538.20 and 21,804.32 is: 30,087.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,799.20 : 53,538.20 = 21,804.32 : x
  2. Step 2: Convert to fraction form
    38,799.20/53,538.20 = 21,804.32/x
  3. Step 3: Cross multiply
    38,799.20x = 53,538.20 × 21,804.32
  4. Step 4: Simplify right side
    38,799.20x = 1,167,364,045.02
  5. Step 5: Solve for x
    x = 1,167,364,045.02/38,799.20
  6. Step 6: Final answer
    x = 30,087.32

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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.