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Finding the Fourth Proportional to 18,756.34, 25,886.21 and 10,798.90

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Solution

The fourth proportional to 18,756.34, 25,886.21 and 10,798.90 is: 14,903.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,756.34 : 25,886.21 = 10,798.90 : x
  2. Step 2: Convert to fraction form
    18,756.34/25,886.21 = 10,798.90/x
  3. Step 3: Cross multiply
    18,756.34x = 25,886.21 × 10,798.90
  4. Step 4: Simplify right side
    18,756.34x = 279,542,474.46
  5. Step 5: Solve for x
    x = 279,542,474.46/18,756.34
  6. Step 6: Final answer
    x = 14,903.89

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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.