Home / 18,935.84-26,110.95-12,890

Finding the Fourth Proportional to 18,935.84, 26,110.95 and 12,890

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Solution

The fourth proportional to 18,935.84, 26,110.95 and 12,890 is: 17,774.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,935.84 : 26,110.95 = 12,890 : x
  2. Step 2: Convert to fraction form
    18,935.84/26,110.95 = 12,890/x
  3. Step 3: Cross multiply
    18,935.84x = 26,110.95 × 12,890
  4. Step 4: Simplify right side
    18,935.84x = 336,570,145.50
  5. Step 5: Solve for x
    x = 336,570,145.50/18,935.84
  6. Step 6: Final answer
    x = 17,774.24

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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.