Home / 14,920.30-20,588.40-8,631.50

Finding the Fourth Proportional to 14,920.30, 20,588.40 and 8,631.50

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Solution

The fourth proportional to 14,920.30, 20,588.40 and 8,631.50 is: 11,910.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,920.30 : 20,588.40 = 8,631.50 : x
  2. Step 2: Convert to fraction form
    14,920.30/20,588.40 = 8,631.50/x
  3. Step 3: Cross multiply
    14,920.30x = 20,588.40 × 8,631.50
  4. Step 4: Simplify right side
    14,920.30x = 177,708,774.60
  5. Step 5: Solve for x
    x = 177,708,774.60/14,920.30
  6. Step 6: Final answer
    x = 11,910.54

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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.