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Finding the Fourth Proportional to 18,756.78, 25,886.80 and 10,799.34

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Solution

The fourth proportional to 18,756.78, 25,886.80 and 10,799.34 is: 14,904.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,756.78 : 25,886.80 = 10,799.34 : x
  2. Step 2: Convert to fraction form
    18,756.78/25,886.80 = 10,799.34/x
  3. Step 3: Cross multiply
    18,756.78x = 25,886.80 × 10,799.34
  4. Step 4: Simplify right side
    18,756.78x = 279,560,354.71
  5. Step 5: Solve for x
    x = 279,560,354.71/18,756.78
  6. Step 6: Final answer
    x = 14,904.50

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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.