Home / 38,139.80-57,203.58-10,431.32

Finding the Fourth Proportional to 38,139.80, 57,203.58 and 10,431.32

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Solution

The fourth proportional to 38,139.80, 57,203.58 and 10,431.32 is: 15,645.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,139.80 : 57,203.58 = 10,431.32 : x
  2. Step 2: Convert to fraction form
    38,139.80/57,203.58 = 10,431.32/x
  3. Step 3: Cross multiply
    38,139.80x = 57,203.58 × 10,431.32
  4. Step 4: Simplify right side
    38,139.80x = 596,708,848.13
  5. Step 5: Solve for x
    x = 596,708,848.13/38,139.80
  6. Step 6: Final answer
    x = 15,645.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.