Home / 27,638.30-38,140.98-15,701.72

Finding the Fourth Proportional to 27,638.30, 38,140.98 and 15,701.72

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Solution

The fourth proportional to 27,638.30, 38,140.98 and 15,701.72 is: 21,668.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,638.30 : 38,140.98 = 15,701.72 : x
  2. Step 2: Convert to fraction form
    27,638.30/38,140.98 = 15,701.72/x
  3. Step 3: Cross multiply
    27,638.30x = 38,140.98 × 15,701.72
  4. Step 4: Simplify right side
    27,638.30x = 598,878,988.49
  5. Step 5: Solve for x
    x = 598,878,988.49/27,638.30
  6. Step 6: Final answer
    x = 21,668.45

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Half scale
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Double scale
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Similar ratio
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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.