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Finding the Fourth Proportional to 19,461, 26,860.38 and 12,385.92

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Solution

The fourth proportional to 19,461, 26,860.38 and 12,385.92 is: 17,095.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,461 : 26,860.38 = 12,385.92 : x
  2. Step 2: Convert to fraction form
    19,461/26,860.38 = 12,385.92/x
  3. Step 3: Cross multiply
    19,461x = 26,860.38 × 12,385.92
  4. Step 4: Simplify right side
    19,461x = 332,690,517.85
  5. Step 5: Solve for x
    x = 332,690,517.85/19,461
  6. Step 6: Final answer
    x = 17,095.24

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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.