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Finding the Fourth Proportional to 19,479.66, 26,881.95 and 12,410.20

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Solution

The fourth proportional to 19,479.66, 26,881.95 and 12,410.20 is: 17,126.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,479.66 : 26,881.95 = 12,410.20 : x
  2. Step 2: Convert to fraction form
    19,479.66/26,881.95 = 12,410.20/x
  3. Step 3: Cross multiply
    19,479.66x = 26,881.95 × 12,410.20
  4. Step 4: Simplify right side
    19,479.66x = 333,610,375.89
  5. Step 5: Solve for x
    x = 333,610,375.89/19,479.66
  6. Step 6: Final answer
    x = 17,126.09

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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.