Home / 27,738.78-38,283.48-15,803.22

Finding the Fourth Proportional to 27,738.78, 38,283.48 and 15,803.22

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Solution

The fourth proportional to 27,738.78, 38,283.48 and 15,803.22 is: 21,810.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,738.78 : 38,283.48 = 15,803.22 : x
  2. Step 2: Convert to fraction form
    27,738.78/38,283.48 = 15,803.22/x
  3. Step 3: Cross multiply
    27,738.78x = 38,283.48 × 15,803.22
  4. Step 4: Simplify right side
    27,738.78x = 605,002,256.81
  5. Step 5: Solve for x
    x = 605,002,256.81/27,738.78
  6. Step 6: Final answer
    x = 21,810.70

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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.