Home / 27,681.42-38,200.68-15,745.08

Finding the Fourth Proportional to 27,681.42, 38,200.68 and 15,745.08

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Solution

The fourth proportional to 27,681.42, 38,200.68 and 15,745.08 is: 21,728.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,681.42 : 38,200.68 = 15,745.08 : x
  2. Step 2: Convert to fraction form
    27,681.42/38,200.68 = 15,745.08/x
  3. Step 3: Cross multiply
    27,681.42x = 38,200.68 × 15,745.08
  4. Step 4: Simplify right side
    27,681.42x = 601,472,762.65
  5. Step 5: Solve for x
    x = 601,472,762.65/27,681.42
  6. Step 6: Final answer
    x = 21,728.39

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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.