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Finding the Fourth Proportional to 18,765.93, 25,888.93 and 10,806.47

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Solution

The fourth proportional to 18,765.93, 25,888.93 and 10,806.47 is: 14,908.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,765.93 : 25,888.93 = 10,806.47 : x
  2. Step 2: Convert to fraction form
    18,765.93/25,888.93 = 10,806.47/x
  3. Step 3: Cross multiply
    18,765.93x = 25,888.93 × 10,806.47
  4. Step 4: Simplify right side
    18,765.93x = 279,767,945.38
  5. Step 5: Solve for x
    x = 279,767,945.38/18,765.93
  6. Step 6: Final answer
    x = 14,908.29

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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.