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Finding the Fourth Proportional to 18,787, 25,927.95 and 10,403.50

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Solution

The fourth proportional to 18,787, 25,927.95 and 10,403.50 is: 14,357.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,787 : 25,927.95 = 10,403.50 : x
  2. Step 2: Convert to fraction form
    18,787/25,927.95 = 10,403.50/x
  3. Step 3: Cross multiply
    18,787x = 25,927.95 × 10,403.50
  4. Step 4: Simplify right side
    18,787x = 269,741,427.83
  5. Step 5: Solve for x
    x = 269,741,427.83/18,787
  6. Step 6: Final answer
    x = 14,357.88

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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.