Home / 13,586.10-20,357.28-8,381.04

Finding the Fourth Proportional to 13,586.10, 20,357.28 and 8,381.04

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Solution

The fourth proportional to 13,586.10, 20,357.28 and 8,381.04 is: 12,558.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,586.10 : 20,357.28 = 8,381.04 : x
  2. Step 2: Convert to fraction form
    13,586.10/20,357.28 = 8,381.04/x
  3. Step 3: Cross multiply
    13,586.10x = 20,357.28 × 8,381.04
  4. Step 4: Simplify right side
    13,586.10x = 170,615,177.97
  5. Step 5: Solve for x
    x = 170,615,177.97/13,586.10
  6. Step 6: Final answer
    x = 12,558.07

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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.