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Finding the Fourth Proportional to 18,870.96, 26,043.56 and 10,488

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Solution

The fourth proportional to 18,870.96, 26,043.56 and 10,488 is: 14,474.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,870.96 : 26,043.56 = 10,488 : x
  2. Step 2: Convert to fraction form
    18,870.96/26,043.56 = 10,488/x
  3. Step 3: Cross multiply
    18,870.96x = 26,043.56 × 10,488
  4. Step 4: Simplify right side
    18,870.96x = 273,144,857.28
  5. Step 5: Solve for x
    x = 273,144,857.28/18,870.96
  6. Step 6: Final answer
    x = 14,474.35

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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.