Home / 38,138.88-52,629.14-21,368.64

Finding the Fourth Proportional to 38,138.88, 52,629.14 and 21,368.64

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Solution

The fourth proportional to 38,138.88, 52,629.14 and 21,368.64 is: 29,487.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,138.88 : 52,629.14 = 21,368.64 : x
  2. Step 2: Convert to fraction form
    38,138.88/52,629.14 = 21,368.64/x
  3. Step 3: Cross multiply
    38,138.88x = 52,629.14 × 21,368.64
  4. Step 4: Simplify right side
    38,138.88x = 1,124,613,146.17
  5. Step 5: Solve for x
    x = 1,124,613,146.17/38,138.88
  6. Step 6: Final answer
    x = 29,487.31

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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.