Home / 27,638.03-38,140.61-15,702.03

Finding the Fourth Proportional to 27,638.03, 38,140.61 and 15,702.03

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Solution

The fourth proportional to 27,638.03, 38,140.61 and 15,702.03 is: 21,668.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,638.03 : 38,140.61 = 15,702.03 : x
  2. Step 2: Convert to fraction form
    27,638.03/38,140.61 = 15,702.03/x
  3. Step 3: Cross multiply
    27,638.03x = 38,140.61 × 15,702.03
  4. Step 4: Simplify right side
    27,638.03x = 598,884,923.93
  5. Step 5: Solve for x
    x = 598,884,923.93/27,638.03
  6. Step 6: Final answer
    x = 21,668.87

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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.