Home / 13,919.83-20,869.83-6,520.24

Finding the Fourth Proportional to 13,919.83, 20,869.83 and 6,520.24

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Solution

The fourth proportional to 13,919.83, 20,869.83 and 6,520.24 is: 9,775.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,919.83 : 20,869.83 = 6,520.24 : x
  2. Step 2: Convert to fraction form
    13,919.83/20,869.83 = 6,520.24/x
  3. Step 3: Cross multiply
    13,919.83x = 20,869.83 × 6,520.24
  4. Step 4: Simplify right side
    13,919.83x = 136,076,300.36
  5. Step 5: Solve for x
    x = 136,076,300.36/13,919.83
  6. Step 6: Final answer
    x = 9,775.72

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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.