Home / 13,585.55-20,384.09-8,664.80

Finding the Fourth Proportional to 13,585.55, 20,384.09 and 8,664.80

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Solution

The fourth proportional to 13,585.55, 20,384.09 and 8,664.80 is: 13,000.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,585.55 : 20,384.09 = 8,664.80 : x
  2. Step 2: Convert to fraction form
    13,585.55/20,384.09 = 8,664.80/x
  3. Step 3: Cross multiply
    13,585.55x = 20,384.09 × 8,664.80
  4. Step 4: Simplify right side
    13,585.55x = 176,623,917.79
  5. Step 5: Solve for x
    x = 176,623,917.79/13,585.55
  6. Step 6: Final answer
    x = 13,000.87

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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.