Home / 28,103.64-38,782.56-15,356.40

Finding the Fourth Proportional to 28,103.64, 38,782.56 and 15,356.40

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Solution

The fourth proportional to 28,103.64, 38,782.56 and 15,356.40 is: 21,191.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,103.64 : 38,782.56 = 15,356.40 : x
  2. Step 2: Convert to fraction form
    28,103.64/38,782.56 = 15,356.40/x
  3. Step 3: Cross multiply
    28,103.64x = 38,782.56 × 15,356.40
  4. Step 4: Simplify right side
    28,103.64x = 595,560,504.38
  5. Step 5: Solve for x
    x = 595,560,504.38/28,103.64
  6. Step 6: Final answer
    x = 21,191.58

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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.