Home / 27,946.65-38,546.84-18,978.57

Finding the Fourth Proportional to 27,946.65, 38,546.84 and 18,978.57

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Solution

The fourth proportional to 27,946.65, 38,546.84 and 18,978.57 is: 26,177.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,946.65 : 38,546.84 = 18,978.57 : x
  2. Step 2: Convert to fraction form
    27,946.65/38,546.84 = 18,978.57/x
  3. Step 3: Cross multiply
    27,946.65x = 38,546.84 × 18,978.57
  4. Step 4: Simplify right side
    27,946.65x = 731,563,806.33
  5. Step 5: Solve for x
    x = 731,563,806.33/27,946.65
  6. Step 6: Final answer
    x = 26,177.16

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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.