Home / 27,638.09-38,140.69-15,702.08

Finding the Fourth Proportional to 27,638.09, 38,140.69 and 15,702.08

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Solution

The fourth proportional to 27,638.09, 38,140.69 and 15,702.08 is: 21,668.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,638.09 : 38,140.69 = 15,702.08 : x
  2. Step 2: Convert to fraction form
    27,638.09/38,140.69 = 15,702.08/x
  3. Step 3: Cross multiply
    27,638.09x = 38,140.69 × 15,702.08
  4. Step 4: Simplify right side
    27,638.09x = 598,888,260.99
  5. Step 5: Solve for x
    x = 598,888,260.99/27,638.09
  6. Step 6: Final answer
    x = 21,668.95

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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.