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Finding the Fourth Proportional to 18,891.87, 26,070.35 and 10,933.93

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Solution

The fourth proportional to 18,891.87, 26,070.35 and 10,933.93 is: 15,088.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,891.87 : 26,070.35 = 10,933.93 : x
  2. Step 2: Convert to fraction form
    18,891.87/26,070.35 = 10,933.93/x
  3. Step 3: Cross multiply
    18,891.87x = 26,070.35 × 10,933.93
  4. Step 4: Simplify right side
    18,891.87x = 285,051,409.31
  5. Step 5: Solve for x
    x = 285,051,409.31/18,891.87
  6. Step 6: Final answer
    x = 15,088.58

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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.