Home / 14,749.35-20,356.21-8,780.86

Finding the Fourth Proportional to 14,749.35, 20,356.21 and 8,780.86

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Solution

The fourth proportional to 14,749.35, 20,356.21 and 8,780.86 is: 12,118.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,749.35 : 20,356.21 = 8,780.86 : x
  2. Step 2: Convert to fraction form
    14,749.35/20,356.21 = 8,780.86/x
  3. Step 3: Cross multiply
    14,749.35x = 20,356.21 × 8,780.86
  4. Step 4: Simplify right side
    14,749.35x = 178,745,030.14
  5. Step 5: Solve for x
    x = 178,745,030.14/14,749.35
  6. Step 6: Final answer
    x = 12,118.84

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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.