Home / 28,204.88-38,923.00-15,629.90

Finding the Fourth Proportional to 28,204.88, 38,923.00 and 15,629.90

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Solution

The fourth proportional to 28,204.88, 38,923.00 and 15,629.90 is: 21,569.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,204.88 : 38,923.00 = 15,629.90 : x
  2. Step 2: Convert to fraction form
    28,204.88/38,923.00 = 15,629.90/x
  3. Step 3: Cross multiply
    28,204.88x = 38,923.00 × 15,629.90
  4. Step 4: Simplify right side
    28,204.88x = 608,362,364.01
  5. Step 5: Solve for x
    x = 608,362,364.01/28,204.88
  6. Step 6: Final answer
    x = 21,569.40

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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.