Home / 14,780.64-20,400.69-9,745.74

Finding the Fourth Proportional to 14,780.64, 20,400.69 and 9,745.74

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Solution

The fourth proportional to 14,780.64, 20,400.69 and 9,745.74 is: 13,451.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,780.64 : 20,400.69 = 9,745.74 : x
  2. Step 2: Convert to fraction form
    14,780.64/20,400.69 = 9,745.74/x
  3. Step 3: Cross multiply
    14,780.64x = 20,400.69 × 9,745.74
  4. Step 4: Simplify right side
    14,780.64x = 198,819,820.56
  5. Step 5: Solve for x
    x = 198,819,820.56/14,780.64
  6. Step 6: Final answer
    x = 13,451.37

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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.