Home / 14,774.48-20,389.20-8,486.72

Finding the Fourth Proportional to 14,774.48, 20,389.20 and 8,486.72

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Solution

The fourth proportional to 14,774.48, 20,389.20 and 8,486.72 is: 11,711.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,774.48 : 20,389.20 = 8,486.72 : x
  2. Step 2: Convert to fraction form
    14,774.48/20,389.20 = 8,486.72/x
  3. Step 3: Cross multiply
    14,774.48x = 20,389.20 × 8,486.72
  4. Step 4: Simplify right side
    14,774.48x = 173,037,431.42
  5. Step 5: Solve for x
    x = 173,037,431.42/14,774.48
  6. Step 6: Final answer
    x = 11,711.91

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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.