Home / 27,738.16-38,264.16-18,788.80

Finding the Fourth Proportional to 27,738.16, 38,264.16 and 18,788.80

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Solution

The fourth proportional to 27,738.16, 38,264.16 and 18,788.80 is: 25,918.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,738.16 : 38,264.16 = 18,788.80 : x
  2. Step 2: Convert to fraction form
    27,738.16/38,264.16 = 18,788.80/x
  3. Step 3: Cross multiply
    27,738.16x = 38,264.16 × 18,788.80
  4. Step 4: Simplify right side
    27,738.16x = 718,937,649.41
  5. Step 5: Solve for x
    x = 718,937,649.41/27,738.16
  6. Step 6: Final answer
    x = 25,918.72

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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.