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Finding the Fourth Proportional to 17,645.84, 26,445.40 and 12,943.84

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Solution

The fourth proportional to 17,645.84, 26,445.40 and 12,943.84 is: 19,398.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,645.84 : 26,445.40 = 12,943.84 : x
  2. Step 2: Convert to fraction form
    17,645.84/26,445.40 = 12,943.84/x
  3. Step 3: Cross multiply
    17,645.84x = 26,445.40 × 12,943.84
  4. Step 4: Simplify right side
    17,645.84x = 342,304,927.86
  5. Step 5: Solve for x
    x = 342,304,927.86/17,645.84
  6. Step 6: Final answer
    x = 19,398.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.