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Finding the Fourth Proportional to 19,460, 26,859 and 12,384.92

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Solution

The fourth proportional to 19,460, 26,859 and 12,384.92 is: 17,093.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,460 : 26,859 = 12,384.92 : x
  2. Step 2: Convert to fraction form
    19,460/26,859 = 12,384.92/x
  3. Step 3: Cross multiply
    19,460x = 26,859 × 12,384.92
  4. Step 4: Simplify right side
    19,460x = 332,646,566.28
  5. Step 5: Solve for x
    x = 332,646,566.28/19,460
  6. Step 6: Final answer
    x = 17,093.86

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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.