Home / 14,385.50-21,477.34-12,171.76

Finding the Fourth Proportional to 14,385.50, 21,477.34 and 12,171.76

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Solution

The fourth proportional to 14,385.50, 21,477.34 and 12,171.76 is: 18,172.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,385.50 : 21,477.34 = 12,171.76 : x
  2. Step 2: Convert to fraction form
    14,385.50/21,477.34 = 12,171.76/x
  3. Step 3: Cross multiply
    14,385.50x = 21,477.34 × 12,171.76
  4. Step 4: Simplify right side
    14,385.50x = 261,417,027.92
  5. Step 5: Solve for x
    x = 261,417,027.92/14,385.50
  6. Step 6: Final answer
    x = 18,172.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.