Home / 13,385.70-20,070.55-8,195.30

Finding the Fourth Proportional to 13,385.70, 20,070.55 and 8,195.30

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Solution

The fourth proportional to 13,385.70, 20,070.55 and 8,195.30 is: 12,288.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.70 : 20,070.55 = 8,195.30 : x
  2. Step 2: Convert to fraction form
    13,385.70/20,070.55 = 8,195.30/x
  3. Step 3: Cross multiply
    13,385.70x = 20,070.55 × 8,195.30
  4. Step 4: Simplify right side
    13,385.70x = 164,484,178.42
  5. Step 5: Solve for x
    x = 164,484,178.42/13,385.70
  6. Step 6: Final answer
    x = 12,288.05

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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.