Home / 21,925.08-30,261.60-12,977.82

Finding the Fourth Proportional to 21,925.08, 30,261.60 and 12,977.82

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Solution

The fourth proportional to 21,925.08, 30,261.60 and 12,977.82 is: 17,912.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,925.08 : 30,261.60 = 12,977.82 : x
  2. Step 2: Convert to fraction form
    21,925.08/30,261.60 = 12,977.82/x
  3. Step 3: Cross multiply
    21,925.08x = 30,261.60 × 12,977.82
  4. Step 4: Simplify right side
    21,925.08x = 392,729,597.71
  5. Step 5: Solve for x
    x = 392,729,597.71/21,925.08
  6. Step 6: Final answer
    x = 17,912.35

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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.