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Finding the Fourth Proportional to 14,645.52, 20,220 and 11,281.98

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Solution

The fourth proportional to 14,645.52, 20,220 and 11,281.98 is: 15,576.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,645.52 : 20,220 = 11,281.98 : x
  2. Step 2: Convert to fraction form
    14,645.52/20,220 = 11,281.98/x
  3. Step 3: Cross multiply
    14,645.52x = 20,220 × 11,281.98
  4. Step 4: Simplify right side
    14,645.52x = 228,121,635.60
  5. Step 5: Solve for x
    x = 228,121,635.60/14,645.52
  6. Step 6: Final answer
    x = 15,576.21

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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.