Home / 13,910.86-20,856.99-8,977.80

Finding the Fourth Proportional to 13,910.86, 20,856.99 and 8,977.80

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Solution

The fourth proportional to 13,910.86, 20,856.99 and 8,977.80 is: 13,460.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,910.86 : 20,856.99 = 8,977.80 : x
  2. Step 2: Convert to fraction form
    13,910.86/20,856.99 = 8,977.80/x
  3. Step 3: Cross multiply
    13,910.86x = 20,856.99 × 8,977.80
  4. Step 4: Simplify right side
    13,910.86x = 187,249,884.82
  5. Step 5: Solve for x
    x = 187,249,884.82/13,910.86
  6. Step 6: Final answer
    x = 13,460.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.