Home / 20,586.08-28,408.74-11,154.64

Finding the Fourth Proportional to 20,586.08, 28,408.74 and 11,154.64

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Solution

The fourth proportional to 20,586.08, 28,408.74 and 11,154.64 is: 15,393.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,586.08 : 28,408.74 = 11,154.64 : x
  2. Step 2: Convert to fraction form
    20,586.08/28,408.74 = 11,154.64/x
  3. Step 3: Cross multiply
    20,586.08x = 28,408.74 × 11,154.64
  4. Step 4: Simplify right side
    20,586.08x = 316,889,267.55
  5. Step 5: Solve for x
    x = 316,889,267.55/20,586.08
  6. Step 6: Final answer
    x = 15,393.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.