Home / 39,830.40-55,015.20-29,203.20

Finding the Fourth Proportional to 39,830.40, 55,015.20 and 29,203.20

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Solution

The fourth proportional to 39,830.40, 55,015.20 and 29,203.20 is: 40,336.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,830.40 : 55,015.20 = 29,203.20 : x
  2. Step 2: Convert to fraction form
    39,830.40/55,015.20 = 29,203.20/x
  3. Step 3: Cross multiply
    39,830.40x = 55,015.20 × 29,203.20
  4. Step 4: Simplify right side
    39,830.40x = 1,606,619,888.64
  5. Step 5: Solve for x
    x = 1,606,619,888.64/39,830.40
  6. Step 6: Final answer
    x = 40,336.52

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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.