Home / 27,997.65-38,636.76-15,422.40

Finding the Fourth Proportional to 27,997.65, 38,636.76 and 15,422.40

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Solution

The fourth proportional to 27,997.65, 38,636.76 and 15,422.40 is: 21,282.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,997.65 : 38,636.76 = 15,422.40 : x
  2. Step 2: Convert to fraction form
    27,997.65/38,636.76 = 15,422.40/x
  3. Step 3: Cross multiply
    27,997.65x = 38,636.76 × 15,422.40
  4. Step 4: Simplify right side
    27,997.65x = 595,871,567.42
  5. Step 5: Solve for x
    x = 595,871,567.42/27,997.65
  6. Step 6: Final answer
    x = 21,282.91

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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.