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Finding the Fourth Proportional to 19,428.92, 26,810.92 and 11,873.76

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Solution

The fourth proportional to 19,428.92, 26,810.92 and 11,873.76 is: 16,385.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,428.92 : 26,810.92 = 11,873.76 : x
  2. Step 2: Convert to fraction form
    19,428.92/26,810.92 = 11,873.76/x
  3. Step 3: Cross multiply
    19,428.92x = 26,810.92 × 11,873.76
  4. Step 4: Simplify right side
    19,428.92x = 318,346,429.46
  5. Step 5: Solve for x
    x = 318,346,429.46/19,428.92
  6. Step 6: Final answer
    x = 16,385.18

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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.