Home / 25,956.78-35,821.06-15,885.02

Finding the Fourth Proportional to 25,956.78, 35,821.06 and 15,885.02

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Solution

The fourth proportional to 25,956.78, 35,821.06 and 15,885.02 is: 21,921.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,956.78 : 35,821.06 = 15,885.02 : x
  2. Step 2: Convert to fraction form
    25,956.78/35,821.06 = 15,885.02/x
  3. Step 3: Cross multiply
    25,956.78x = 35,821.06 × 15,885.02
  4. Step 4: Simplify right side
    25,956.78x = 569,018,254.52
  5. Step 5: Solve for x
    x = 569,018,254.52/25,956.78
  6. Step 6: Final answer
    x = 21,921.76

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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.